Satellite positioning system gps glonass. Satellite navigation systems gps and glonass

To determine the location, global navigation satellite systems (GNSS) are currently the most widely used: Russian GLONASS and American GPS.

This is primarily due to the availability and miniaturization of navigation devices. Personal navigator today has become as commonplace as mobile phone or computer.

In addition, GNSS have a high accuracy of determining navigation parameters and have a global coverage.

How GNSS works

The principle of determining the location of the consumer is quite simple, like everything ingenious. Knowing the location of the satellites (information is contained in the navigation signal of the satellite) and the distance to them, you can uniquely determine your location in a certain three-dimensional coordinate system by simple algebraic calculations. Ideally, in order to obtain three coordinates of the consumer, it is enough to know information about three navigation spacecraft (NSV).

However, not everything is so simple in practice. The thing is that GNSS implements the principle of non-requested range measurements, i.e. the transit time of the information signal from the satellite to the consumer is determined. And in order to determine this time with high accuracy, it is necessary to synchronize the clocks of the satellite and the consumer's navigation equipment (NAP). In this regard, in order to find the coordinates and mismatch of the clocks of the NAP and GNSS, it is necessary to know the parameters of at least 4 satellites.

When creating GNSS, first of all, such requirements as globality, all-weather capability, continuity and round the clock, noise immunity, compactness, and availability were taken into account. To ensure the fulfillment of all the listed requirements, as well as the achievement of high performance characteristics, the joint functioning of the three main segments allows: space; ground; custom.

Find out more Up-to-date information on the state of the GLONASS constellation can be found on the website of the Information and Analytical Center of the Coordinate and Time and navigation support (IAC KVNO) FSUE TsNIIMash: http://glonass-iac.ru/GLONASS/ .

The GLONASS space segment is an orbital constellation of 24 satellites located in three planes of 8 satellites each with an orbital altitude of 19,100 km and an inclination of 64.8°. In addition, there should be one backup satellite in each plane. NSC emit radio signals at their own frequencies.

The ground segment consists of a cosmodrome, a command and measurement complex, and a control center.

And finally, the segment that is of the greatest interest to the consumer is the user segment, which includes NAP.

GNSS today

Modern domestic receivers for civil use, installed on the NAP Vehicle, operate on GLONASS (L1-band, ST-code) and GPS (L1, C/A-code) signals and allow to determine (according to the probability level of 0.95 with a geometric factor value of not more than 3):

coordinates in the plan with an error of no more than 10 m and in height - no more than 15 m;

planned speed with an error of not more than 0.15 m/s.

To date, the use of single-system GNSS receivers in the NAP (only GLONASS or only GPS) has practically disappeared. First of all, this is due to the fact that in the conditions of the modern urban landscape, obscuring the radio visibility of satellites is inevitable. An example is the work of the NAP near the wall of the house, when physically half of the sky is closed. Ultimately, this leads to the fact that the ability to accurately position the object is reduced, and sometimes becomes impossible. The use of two navigation systems improves and expands the experience for consumers.

Under such conditions, the use of GLONASS together with GPS significantly increases the reliability and reliability of the work of the NAP in determining coordinates.

It is still hard to believe that in our age of "wild" commerce there is absolutely free (if you have technical means) the ability to determine your location anywhere in the world. This is one of the greatest inventions of the 20th century! This multibillion-dollar system (today there are several of them) was conceived primarily in the interests of defense (and science), but very little time passed and almost every person began to use it every day. Under the gps navigator we mean a special radio receiver for determining the geographical coordinates of the current location (positioning).

I was prompted to write this post by the phrase of a well-known tourist in narrow circles about Garmin navigator Etrex 30x.
Here is a quote from his article: "Satellite system: GPS / GPS + Glonass / Demo mode. Doesn't suggest that only Glonass cannot be turned on? So it's not there. The instructions say nothing about this. You can take Garmin in one hand for fun , and in another smartphone with GLONASS, open the satellite display screen and try to find similar ones. This is just an emulation, so whether you put GPS or GPS + GLONASS is not important."
How do you like this statement? Just do not throw slippers immediately check. Since the concepts of "GPS", "GLONASS" and "Garmin" appear here, we will have to cover the topic in full.

1 - GPS
The first global positioning system was the American NAVSTAR system, which dates back to 1973. Already in 1978, the first satellite was launched, which can be considered the beginning of the Global Positioning System (GPS) era, and in 1993 the orbital constellation consisted of 24 spacecraft (SC), but only in 2000 (after the deactivation of the selective access mode) did regular operation begin for civilian users.
The NAVSTAR satellites are located at an altitude of 20,200 km with an inclination of 55° (in six planes) and an orbital period of 11 hours and 58 minutes. GPS uses the 1984 World Geodetic System (WGS-84), which has become the standard for coordinate systems around the world. ALL navigators locate (show coordinates) in this system by default.

The constellation currently consists of 32 satellites. The earliest in the system is November 22, 1993, the latest (latest) is December 9, 2015.


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2 - GLONASS
The domestic navigation system began with the Cicada system consisting of four satellites in 1979. The GLONASS system was adopted in trial operation in 1993. In 1995, a full orbital constellation (24 first-generation Glonass satellites) was deployed, and the regular operation of the system began. Since 2004, new satellites "Glonass-M" have been launched, which broadcast two civil signals at frequencies L1 and L2.
The GLONASS satellites are located at an altitude of 19,400 km with an inclination of 64.8° (in three planes) and a period of 11 hours and 15 minutes.

The constellation currently consists of 24 satellites. The earliest in the system is April 3, 2007, the latest (latest) is October 16, 2017.


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Table with numbers of GLONASS satellites. There is a GLONASS number and a COSMOS number. Our smartphones have completely different satellite numbers. From 1 this is GPS, from 68 - GLONASS.
Moreover - they are even different in the navigator and smartphone.

Now let's look at the "Orbitron" program. On the afternoon of April 4, 10 satellites of the GLONASS system "flyed" in the sky in Izhevsk.

Or in another view - on the map. There is all the data about each satellite.

The main difference between the two systems is the signal and its structure.
The GPS system uses code division. A signal with a standard precision code (C/A code) transmitted in the L1 band (1575.42 MHz). Signals are modulated with pseudo-random sequences of two types: C/A-code and P-code. C/A - public code - is a PRN with a repetition period of 1023 cycles and a pulse rate of 1.023 MHz.
In the GLONASS system, frequency division of channels. All satellites use the same pseudo-random code sequence to transmit open signals, however each satellite transmits on a different frequency using 15-channel frequency separation. Navigation radio signals with frequency division in two bands: L1 (1.6 GHz) and L2 (1.25 GHz).
The structure of the signal is also different. To describe the movement of satellites in orbit, fundamentally different mathematical models. For GPS, this is a model in osculating elements. This model implies that the satellite's trajectory is divided into sections, in which the movements are described by the Keplerian model, the parameters of which change over time. The GLONASS system uses a differential motion model.
Now to the question of the possibility of combination. 2011 passed under the auspices of GLONASS support. When designing the receivers, it was important to overcome the problems of incompatibility between GLONASS and GPS hardware support. That is, the GLONASS FM signal required a wider bandwidth than the PCM signals used by GPS, bandpass filters with different frequency centers, and different speed transmission of signal elements. To save energy in navigators, it is recommended to turn on the "GPS only" mode.

3 - Garmin
The American manufacturer of portable navigation devices has gained worldwide fame primarily due to tourist GPS navigators(GpsMap, eTrex, Oregon, Montana, Dakota series) and car navigators, sports watches and echo sounders. The headquarters is located in Olat, Kansas. Since 2011, Garmin has begun selling GPSMAP 62stc navigators with the ability to receive and process signals from GPS and GLONASS satellites. However, information about the chip manufacturers used has become a trade secret.

The use of dual-system receivers helps to improve the quality of navigation in real conditions, while the accuracy of determining the coordinates of the two-system does not affect in any way. Insufficient signal from satellites of one system in this place and is currently compensated by the satellites of another system. The maximum number of "visible" satellites in the sky under ideal conditions: GPS - 13, GLONASS - 10. It is for this reason that most conventional (non-geodetic) receivers have 24 channels.

Here are the test results from 2016. For your information - NAP-4 and NAP-5 use navigation receivers of the Izhevsk radio plant MNP-M7 and MNP-M9.1, respectively.

Conclusions. The best results in terms of positioning accuracy on the route of the experiment were shown by NAP-1, NAP-2, NAP-4. All NAPs have positioning accuracy sufficient for confident navigation in all modes. At the same time, the positioning accuracy in the GPS mode and in the combined mode is somewhat better than in the GLONASS mode.
The results of NAP-3 with experimental software in terms of positioning accuracy in plan in all modes are worse than those of the same receiver with standard software (NAP-2). There is no such difference in height accuracy. The exceptions are large errors in the combined mode, caused by a one-time failure in the operation of the NAP, which led to large deviations.
The results of the NAP-5 are generally worse than those of the NAP of the same manufacturer of the previous generation (NAP-4). There was a slight improvement in positioning accuracy in plan in the GLONASS mode. ()

Navigator antenna receives satellite signals and transmits to the receiver, which processes them. Chips for navigation devices that support GPS+Glonass are currently produced by many companies: Qualcomm (SiRFatlas V, drol_links in Garmins there is a STA8088EXG receiver from one of the largest European companies STMicroelectronics.

Conclusions for users of the Garmin navigator:
1. In Garmin navigators and watches (after 2011), it became possible to select (enable signal reception and processing) either GPS or GPS + GLONASS. Separately, GLONASS is not provided due to the fact that it is Garmin (well, how will the Americans include only something Russian?)
2. In ideal or close to them conditions (steppe, plain), the second system is not necessary. In the mountains, the city and the northern latitudes - very desirable. But the energy consumption will be more.
3. Well, if smartphone manufacturers were able to "shove" this feature into their compact devices, then why didn't Garmin "succeed" in this?
Good luck!

For a long time, the GPS global geopositioning system created in the USA was the only one available to ordinary users. But even taking into account the fact that the accuracy of civilian instruments was initially lower than their military counterparts, it was enough for navigation and for tracking the coordinates of cars.

However, even in the Soviet Union, its own coordinate system was developed, known today as GLONASS. Despite the similar principle of operation (calculation of time intervals between signals from satellites is used), GLONASS has serious practical differences from GPS, due to both development conditions and practical implementation.

• GLONASS is more accurate in northern regions. This is explained by the fact that significant military groupings of the USSR, and later Russia, were located precisely in the north of the country. Therefore, the mechanics of GLONASS was calculated taking into account accuracy in such conditions.
• For uninterrupted operation of the GLONASS systemno correction stations required. To ensure the accuracy of GPS, whose satellites are stationary relative to the Earth, a chain of geostationary stations is needed to track the inevitable deviations. In turn, GLONASS satellites are mobile relative to the Earth, so the problem of correcting coordinates is absent from the outset.

For civilian use, this difference is noticeable. For example, in Sweden 10 years ago it was GLONASS that was actively used, despite a large number of already existing equipment for GPS. A large part of the territory of this country lies at the latitudes of the Russian North, and the advantages of GLONASS in such conditions are obvious: the lower the satellite's inclination to the horizon, the more accurately it is possible to calculate the coordinates and speed of movement with equal accuracy in estimating the time intervals between their signals (given by the navigator equipment).

So which is better?

It is enough to evaluate the modern market of telematics systems to get the right answer to this question. Using a connection to GPS and GLONASS satellites in a navigation or security system at the same time, you can achieve three main advantages.

• High accuracy. The system, analyzing the current data, can choose the most correct of the available ones. For example, at the latitude of Moscow, GPS now provides maximum accuracy, while in Murmansk GLONASS will become the leader in this parameter.
• Maximum Reliability. Both systems operate on different channels, therefore, when faced with deliberate jamming or extraneous interference with the air in the GPS band (as in the more common), the system will retain the ability to geoposition using the GLONASS network.
• Independence. Since both GPS and GLONASS are originally military systems, the user may experience deprivation of access to one of the networks. To do this, it is enough for the developer to introduce software restrictions into the implementation of the communication protocol. For the Russian consumer, GLONASS becomes to some extent in a backup way operation when GPS is unavailable.

That is why the systems "Caesar Satellite", offered by us, in all modifications use exactly double geopositioning, supplemented by tracking coordinates by base stations cellular communication.

How truly reliable geolocation works

Consider work reliable system GPS/GLONASS tracking on the example of Cesar Tracker A.

The system is in sleep mode, not transmitting data to the cellular network and turning off the GPS and GLONASS receivers. This is necessary to save the life of the built-in battery as much as possible, respectively, to ensure the greatest autonomy of the system that protects your car. In most cases, the battery lasts for 2 years. If you need to find the location of your car, for example in case of theft, you need to contact the Caesar Satellite security center. Our employees transfer the system to an active state and receive data on the location of the car.

During the transition to active mode, three independent processes occur simultaneously:

• The GPS receiver is triggered, analyzing the coordinates according to its geopositioning program. If less than three satellites are detected within a given period of time, then the system is considered unavailable. Similarly, the coordinates are determined by the GLONASS channel.
• The tracker compares data from both systems. If a sufficient number of satellites were found in each, the tracker selects the data that it considers more reliable and accurate. This is especially true with active electronic countermeasures - jamming or replacing the GPS signal.
• The GSM module processes geolocation data from LBS (cellular base stations). This method is considered the least accurate and is used only if both GPS and GLONASS are unavailable.

In this way, modern system tracking has a triple reliability, applying three geopositioning systems separately. But, of course, it is the support of GPS / GLONASS in the design of the tracker that provides maximum accuracy.

Application in monitoring systems

Unlike beacons-bookmarks, monitoring systems used in commercial vehicles constantly monitor the location of the vehicle and its current speed. With this application, the benefits of dual GPS/GLONASS positioning are revealed even more fully. Duplication of systems allows:

• support monitoring in case of short-term problems with signal reception from GPS or GLONASS;
• maintain high accuracy regardless of the direction of the flight. Using a system like CS Logistic GLONASS PRO, you can confidently operate flights from Chukotka to Rostov-on-Don, maintaining full control over transport throughout the entire route;
• protect commercial vehicles from opening and theft. Servers "Caesar Satellite" in real time receive information about the time and exact location of the car;
• effectively counter hijackers. The system saves internal memory the maximum possible amount of data even if the communication channel with the server is completely unavailable. Information begins to be transmitted at the slightest interruption of radio jamming.

Choosing a GPS/GLONASS system, you provide yourself with the best service and security capabilities in comparison with systems that use only one of the geopositioning methods.

Many car owners use navigators in their cars. However, some of them are not aware of the existence of two different satellite systems - the Russian GLONASS and the American GPS. From this article you will learn what are their differences and which one should be preferred.

How the navigation system works

The navigation system is mainly used to determine the location of an object (in this case a car) and its speed. Sometimes it is also required to determine some other parameters, for example, height above sea level.

She calculates these parameters by setting the distance between the navigator itself and each of several satellites located in earth orbit. As a rule, synchronization with four satellites is necessary for the effective operation of the system. By changing these distances, it determines the coordinates of the object and other characteristics of the movement. GLONASS satellites are not synchronized with the rotation of the Earth, which ensures their stability over a long period of time.

Video: GlonaSS vs GPS

What is better GLONASS or GPS and what is their difference

Navigation systems primarily assumed their use for military purposes, and only then became available to ordinary citizens. Obviously, the military needs to use the developments of its own state, because a foreign navigation system can be turned off by the authorities of this country in the event of conflict situation. Moreover, in Russia they are calling for the use of the GLONASS system in Everyday life military and government employees.

In everyday life, an ordinary motorist should not worry at all about the choice of a navigation system. Both GLONASS and provide navigation quality sufficient for everyday use. In the northern territories of Russia and other states located in northern latitudes, GLONASS satellites work more efficiently due to the fact that their trajectories are higher above the Earth. That is, in the Arctic, in the Scandinavian countries, GLONASS is more efficient, and the Swedes recognized this back in 2011. In other regions, GPS is slightly more accurate than GLONASS in determining location. According to the Russian system of differential correction and monitoring, GPS errors ranged from 2 to 8 meters, GLONASS errors from 4 to 8 meters. But GPS, to determine the location, you need to catch from 6 to 11 satellites, GLONASS is enough for 6-7 satellites.

It should also be noted that the GPS system appeared 8 years earlier and went into a solid gap in the 90s. And over the past decade, GLONASS has reduced this gap almost completely, and by 2020 the developers promise that GLONASS will not be inferior to GPS in anything.

Most of the modern ones are equipped with a combined system that supports both the Russian satellite system and the American one. It is these devices that are the most accurate and have the lowest error in determining the coordinates of the car. The stability of the received signals also increases, because such a device can “see” more satellites. On the other hand, the prices for such navigators are much higher than single-system counterparts. It is understandable - two chips are built into them, capable of receiving signals from each type of satellite.

Video: test of GPS and GPS + GLONASS receivers Redpower CarPad3

Thus, the most accurate and reliable navigators are dual-system devices. However, their advantages are associated with one significant drawback - cost. Therefore, when choosing, you need to think - is such high accuracy needed in everyday use? Also, for a simple car enthusiast, it is not very important which navigation system to use - Russian or American. Neither GPS nor GLONASS will let you get lost and take you to your desired destination.

Many people know what GLONASS is today. But how exactly does this system work, what is it for, and what is needed for it? effective use, is often left out of brackets.

To regard the GLONASS system simply as a satellite navigation system means to simplify its functionality to the utmost. Today it can be used not only by the military (as it was originally conceived), but also by owners of commercial enterprises, as well as ordinary motorists.

GLONASS is a Russian development that provides accurate positioning of an object in space with minimal error. To determine the coordinates, special equipment is used, which, with the support of ground infrastructure, communicates with a network of satellites launched into near-Earth orbit.

How the system works:

• On the object, the coordinates of which must be determined, a receiving and transmitting device is installed - terminal.
• For positioning, the terminal submits a request to the satellites. The more satellites that respond to the request (ideally, at least 4), the more accurately the coordinates will be determined.
• The response signal is sent to the terminal, software package which analyzes the delay time for different satellites. Based on the analysis of the response information, the coordinates of the object on which the receiving equipment is installed are determined.

At permanent job terminal (i.e. regular sending of requests and analysis of responses), the GLONASS system can determine not only the position, but also the speed of the object. When moving, the positioning accuracy decreases, but still remains sufficient for the navigation equipment to bind the coordinates of the object to the electronic map of the area and build a route.

Comparison with the main analogue - the GPS system

Give a complete answer to the question "What is GLONASS?" it is impossible without comparing it with the "closest competitor" - the GPS global positioning system. Work on both systems began in the USSR and the USA at about the same time - in the early 80s of the last century. After satellite navigation came out from under full control military and began to be used for commercial purposes, GLONASS and GPS developed according to fairly similar scenarios.

Both systems operate on the basis of constellations of 24 satellites in geostationary orbits. But they also have differences:

• Russian satellites move in 3 planes (respectively, 8 devices per orbit).
• GPS satellites have 4 orbits, 6 vehicles each.
• The positioning error of GPS is somewhat lower, but both systems accurately determine the coordinates.
• The main advantage of GPS is almost 100% coverage of the globe. GLONASS fully covers the territory of the Russian Federation, but outside Russian Federation there are areas in which the signal from satellites is very weak or completely absent.
• There are also technical nuances: the US service uses CDMA encoding, the Russian service uses a more complex and therefore more energy-intensive FDMA encoding. Because of this, the life of GLONASS satellites is reduced, so there is a need for more frequent launch of equipment into orbit.

It is difficult to talk about the unambiguous advantage of one of the two described navigation systems. Moreover, most often equipment for remote positioning is made combined: it can work with both GPS satellites and GLONASS equipment.

Scope of application

Equipment and software, which makes it possible to determine the location of an object using a satellite network, can solve several problems.

The main function that GLONASS household terminals perform is global navigation for transport. Such equipment is an improved map: the coordinates determined by the terminal are superimposed on the terrain plan and show the optimal direction of movement to a given point.

In addition, the equipment can be used:

• In transport monitoring systems. Companies that have to track the movement of multiple vehicles (passenger buses, trucks) on regular or non-scheduled routes get the opportunity to see at any time where this or that vehicle is located. To do this, cars are equipped with GLONASS terminals that are connected to the software.

In addition to direct tracking of the movement of equipment, the dispatcher gets the opportunity to monitor compliance with the speed limit, the driver’s work / rest schedule, the safety of cargo in the refrigerated compartments of refrigerators, and the fuel level in tanks / tanks. To solve these problems, additional equipment can be installed, which is connected to the terminal connectors.

• In unmanned vehicles. For drones, a satellite navigation system, along with sensors that read environmental parameters, are the main control elements. Such equipment is already being produced and is being tested - including on the routes of the Russian Federation. Experts predict an increase in the share of unmanned vehicles on the roads in the near future.
• in anti-theft systems. GLONASS tracker, hidden in the car, can give an alarm if the coordinates of the car change without the knowledge of the owner. In addition, the equipment can periodically send messages indicating the location of the car - this will make it easier for the owner or law enforcement to find the stolen car.

GLONASS for transport control

If GPS traditionally remains more popular in the segment of navigation systems for drivers, GLONASS occupies a more profitable niche in the commercial segment. This is due to the active development of remote transport monitoring systems.

Such systems traditionally include a network of GLONASS terminals installed on vehicles and dispatching software. The introduction of monitoring provides for its integration with the logistics scheme of the enterprise.

The main task is to coordinate the work of the transport department and track the movement of vehicles carrying passengers or goods in real time. The coordinates of each machine are determined by the satellite at a set interval and superimposed on the map, so the dispatcher or head of the department receives the most objective and timely information.

In addition, transport monitoring can be used to:

• Increasing the level of discipline. The navigation terminal monitors the movement of the vehicle along the route, excluding misuse of equipment and downtime. Any unplanned stop or deviation from the route must be motivated by the driver, and the dispatcher can contact him immediately upon detection of a violation.
• Improving traffic safety and reducing accidents. The GLONASS system makes it possible to control the speed of movement, signaling the dispatcher about speeding. In addition, monitoring allows you to track processing to comply with the regime of work and rest. This not only reduces the risk of accidents due to overwork, but also ensures that there are no penalties when checking tachograph readings.
• Fuel level control. Installation of fuel level sensors with their connection to the terminal almost completely eliminates the possibility of theft of fuel and lubricants.

What is ERA GLONASS?

The system for determining coordinates with the help of GLONASS satellites can also solve another problem - emergency notification of an accident. To do this, an ERA-GLONASS terminal (UVEOS) with a SIM card is installed in the car to work in mobile network, and a "panic button" to call the dispatcher.

If the machine is equipped with ERA-GLONASS during production or delivery to the Russian Federation, then in addition to the terminal with a call button, sensors are also installed in it that respond to damage and automatically give an alarm in case of impact or coup.

The main task of the system is to notify emergency services(DPS traffic police, Ministry of Emergency Situations, Ambulance) about the accident, giving them the coordinates of the accident site and basic information about the car and passengers. At the same time, the dispatcher of the call center receives a signal about what happened, he also transmits the received information to the rescue services.

Features of the work of emergency information

ERA-GLONASS works according to a simple principle:

• The alarm can be activated automatically (shock/flip sensor triggered) or in manual mode(the driver or one of the passengers pressed the button).
• After the signal arrives at the call center, the dispatcher contacts the machine in voice mode (the terminal design includes a speaker and a microphone). This is necessary to exclude false calls or accidental activation of the SOS button.
• If no response was received, or the driver confirmed the fact of the accident, the information is transmitted to the rescue services.

The automatic operation of the system minimizes the time between an accident and the arrival of help at the scene. This significantly reduces road deaths, because ambulances and rescuers have more time to provide qualified assistance.

The reliability of the system is very high: the terminals are supplied with autonomous power supplies, and even when the power is turned off onboard network during an accident, they remain operational for at least several hours. This is quite enough to determine the coordinates, as well as to communicate with the call center.

The SIM card installed in the terminal provides a stable connection with the dispatcher wherever there is mobile network coverage. To ensure reliable communication, the devices are equipped with efficient antennas for cellular communications and GLONASS satellites. Usually when good quality signal data is transmitted via GPRS (using a 3G modem), in case of communication problems, the terminal can send service SMS with basic information for emergency services.

Both the communication session with the dispatcher and the call for help by activating emergency information for rescue services are completely free.

What data does it collect?

UVEOS are mandatory for installation for all cars that are put into circulation on the territory of the Russian Federation. But if new cars are equipped with terminals, alarm buttons and sensors at the factory, then when importing equipment, the owner is obliged to install ERA-GLONASS at his own expense, otherwise it will be impossible to operate the car in the Russian Federation.

One of the arguments against the equipment of the ERA-GLONASS car is the possible tracking of the movement of equipment over a satellite network (i.e. illegal transfer of personal data to special services) or wiretapping of the cabin. In practice, the tracking function is not implemented in the terminals, therefore, without the knowledge of the owner, it is impossible to track the movement of the car.

According to manufacturers, the terminal collects and transmits only the following data:

• Accident site coordinates.
• speed at the time of the accident.
• Type of alarm triggering (shock/coup sensor, forced call).
• Vehicle data: number, brand, engine type (gasoline/diesel).
• The number of fastened seat belts.

The information received by the dispatcher during a conversation with the driver is also transmitted to the rescue services.

Today GLONASS is not just a navigator that will allow you not to get lost on unfamiliar roads. The possibilities of satellite positioning are much wider, and both an ordinary car owner and the head of a commercial enterprise with an extensive fleet of cars can use them.