RU2266217C1 - Information-navigation system for intercepting hi-jacked vehicles - Google Patents

Abstract

FIELD: transport engineering; security systems.

SUBSTANCE: invention relates to security system providing search, detection, location and interception of hi-jacked vehicles by means of direct action vehicles. Subscriber complex is mounted on vehicle under protection. Said complex includes subscriber transmit-receive module connected by radio with cellular mobile communication network, microcontroller connected with subscriber transmit-receive module and made for reception of messages from security alarm unit and transmission of orders to actuating devices of vehicle under protection to interlock the vehicle functional units and subscriber transmitter which is connected to output of microcontroller and is made for radiating coded messages on hopping carrier frequency containing information on category of message and codes of identification signs of vehicle under protection. Search complexes are installed on direct action vehicle. Each said complex contains search transmit-receive module connected to cellular mobile communication network and coded messages reception unit made for reception by radio of coded messages from subscriber transmitter on hopping carrier frequency. Moreover, each subscriber complex is furnished with satellite navigation subscriber unit whose output is connected to additional input of microcontroller. The latter is made for converting satellite navigation data into coded message format for radiating by subscriber transmitter and into coded message format for radiating by transmit-receive module. Each search complex includes data format converter unit whose first input is connected to output of coded messages reception unit and second input, to output of search transmit-receive module, and personal navigator made for reception and processing of global satellite navigation signals, determination of direction of movement and distance to chosen point of route and displaying said parameters on indicator screen. Input of personal navigator is connected to output of data format converter unit.

EFFECT: provision of concealed interception of hi-jacked vehicle using convenient personal navigation pointer-and-scale instruments widely used in practice.

3 cl, 5 dwg

Description

The invention relates to electronic systems that provide the ability to search, detect, determine the current location and intercept stolen vehicles (TCB) using pedestrian and mobile rapid reaction forces (police, private security, etc.).

One of the first practical systems of this class was the American LO / JACK radio search system, designed to search, detect and intercept TCBs (LO / JACK Radio Search System Operation Manual, Moscow, 1998). The structure of this system includes the following main nodes:

- a transponder covertly mounted on a guarded vehicle (guarded vehicle);

- several geographically spaced base stations containing a turn-on transmitter and an antenna mounted on a tower;

- a tracker installed on police rapid response vehicles (quick response vehicles) is a direction finding device that includes a four-element direction finding antenna with blocks for computer processing and displaying information about the range and bearing of the transponder located on the guarded vehicle.

If the owner of the protected vehicle or another person who has the right to use the protected vehicle (hereinafter the user) determines the fact of theft or theft of the protected vehicle, he shall apply (in writing or by phone) to the LO / JACK quick response center and / or to the police on-call unit . The operator of the LO / JACK system activates the transponder installed on the guarded vehicle by sending him a code message from the antenna of the power-on transmitter installed on the tower. The transponder turns on and starts to send a signal through which from a fast response vehicle equipped with trackers, it is possible to detect this protected vehicle (from this moment it is considered as a TCB). After one of the trackers has detected and detected a working transponder, the operation to pursue and intercept the TCB (“trap”) begins. It involves several quick-response patrol vehicles equipped with trackers by a specialized police unit. Trackers determine the radiation source. Guided by their testimonies and information obtained using standard radio stations from other crews and / or from the quick response center, patrol fast response vehicles gradually tighten the TCB capture ring.

The disadvantages of the above LO / JACK radio search system are:

1. Lack of initial "target designation" - at the time of the beginning of the search for TCB, the determination of its location is carried out only from specialized rapid response vehicles that are patrolling the controlled territory. This forces the police to maintain a specialized unit for this purpose, while incurring significant operational costs, while the main police forces based in duty units are practically unable to participate in the trap operation.

2. The need to intercept the TCB in traffic, which poses a threat to the safety of other road users and creates serious legal difficulties in the event of a traffic accident.

3. The presence on board the vehicle rapid response of special four-element direction finding antennas, unmasking the vehicle rapid response, and thereby facilitate the task of hijackers.

To eliminate these shortcomings, the system for operational tracking of a guarded vehicle according to patent RU No. 2179121, 60 R 25/00, including a receiver, transmitter and processor for storing encoded information about the specified guarded vehicle installed on the latter, and stationary transmitters installed on the road network. As stationary transmitters, low-power transmitters are used with the possibility of emitting an individual encoded signal for each of them, and as a transmitter of a guarded vehicle, a transmitter of a cellular mobile network operating in the corresponding region is used. At the same time, the processor is programmed so that it is capable of alternately capturing the individual code of each of the stationary transmitters and transmitting it together with the encoded information about the protected vehicle (or TCB) through the cellular mobile network to the computer of the control center of the rapid reaction forces.

The disadvantage of this system is its vulnerability to intentional interference with cellular mobile networks. Such interference can be used by an attacker to deprive the system of the ability to transmit information necessary for determining the coordinates of the TCB from the TCB.

The ability of cybercriminals to use means of counteracting standard cellular mobile networks became a reality after small-sized jammers, jammers, entered the commercial market. So, according to the advertising information of the Israeli company NetLine, the C-Guard LP jammer manufactured by this company is capable of blocking the cellular mobile communications network for almost all the standards currently used in any frequency bands used by them.

With an average radiation power of (5-50) mW and a weight of not more than 0.6 kg, this device provides effective blocking of subscriber terminals of standard cellular mobile networks in a radius of (5 ÷ 80) m around itself.

To eliminate this drawback, a method for the integrated protection of moving and stationary objects according to RU Patent No. 2159190, B 60 R 25/00 is directed, according to which, using stationary signaling devices installed on urban infrastructure facilities, code parcels are transmitted that carry information about the parcel category expressed by the test , information message or alarm, and information about the location of these structures, and with the help of subscriber signaling devices installed on movable guarded objects, emit code mailings carrying information on the category of the message, codes of identification signs of mobile guarded objects and codes of their respective users, receive these code parcels at geographically spaced base stations, pre-process the code parcels and transmit them digitally to the central station, where using primary digital the processing determines the category of the message received as part of the code package, the identification characteristics of the object and the geographical coordinates of the nts signaling device emitting a given code message, as well as the distance from the subscriber signaling device to the nearest base stations. In case of unauthorized exposure to any of the movable objects equipped with a subscriber signaling device and detection of an alarm signal in its code message, they send an alarm notification via a paging network to an individual user receiver and to a receiver of a subscriber signaling device installed on a mobile object belonging to this user, stationary signaling devices are used as base stations. At the central station, additional digital processing of the initially processed code parcels is carried out using conditionally constant information about the area, the location of various city structures on it, and traffic flows on the road network received from external information sources. The location of the moving object is determined, the immobilizer installed on this object is activated via the paging network and blocked by the movement of the moving object, and after receiving confirmation from the user of the fact of unauthorized interference with the moving object belonging to it, it is formed at the central station and transmitted via wired or wireless channels the communication center nearest to the given mobile object the center of operational response voice message and digital data carrying information about alarm signal identities, about the identification signs of a mobile guarded object, about the location of this guarded mobile object and information about its user, and in the process of responding to the fact of unauthorized influence, determine the polar coordinates of this mobile using portable or portable direction-finding devices placed on a quick response vehicle object relative to wearable or portable direction-finding devices and with their help specify previously transmitted from the central station data on the location When a protected moving object is awaited.

A system that implements this method is selected as a prototype of the present invention.

The disadvantage of the system that implements the known method is the complexity of the ground infrastructure required for its implementation, since in order to obtain acceptable accuracy in determining the initial location of the TCB ("primary target designation"), the territory should be covered by a fairly dense network of base stations. In addition, the radio search kit includes, as in the aforementioned LO / JACK system, a rather sophisticated radio direction finding device with external antennas that unmask (that is, reduce stealth) fast response vehicles. By the appearance of these antennas, an attacker can recognize interception vehicles and take appropriate countermeasures.

The present invention is directed to addressing the above disadvantages of the prototype system.

The subject of the invention is an information-navigation system for intercepting a focal station, comprising a subscriber complex installed on board a guarded vehicle that contains a subscriber transceiver module configured to receive and transmit radio signals from a cellular mobile network, a microcontroller connected to a subscriber transceiver module, and configured to the ability to receive notifications from the block of security detectors and transmit commands to block the movement of the guarded vehicle to its executive devices properties, as well as a subscriber transmitter, which is connected to one of the outputs of the microcontroller and is configured to emit code messages containing information about the message category and identification codes of the protected vehicle and search complexes installed on board the fast response vehicle at the hopping tunable pseudo-random carrier frequency , each of which contains a search transceiver module connected to a cellular mobile network, and a block for receiving code parcels with the possibility of receiving over the air on a hopping pseudo-randomly varying carrier frequency of code messages from a subscriber transmitter, while the subscriber complex has a satellite navigation subscriber unit, the output of which is connected to an additional input of the microcontroller, which is capable of converting satellite navigation data into a code message format, emitted by the subscriber transmitter, and in the format of the code parcel emitted by the subscriber transceiver module, and in each search the second complex, a data format conversion unit has been introduced, the first input of which is connected to the output of the code parcels reception unit, and the second input is connected to the output of the search transceiver module, and a personal navigator configured to receive and process global satellite navigation signals, determine the required direction of movement and the remaining the distance to the point of location of the TCB and the display of these parameters on the front panel of the personal navigator, while the input of the latter is connected to the output of the conversion unit data format.

Particular features of the invention are as follows.

In the subscriber complex, the subscriber transmitter is configured to radiate a hopping signal into the radio air with code messages carrying information about the message category, identification codes of the protected vehicle and GPS data.

In each search complex, the code parcel reception unit is a hopping signal receiver configured to select message category information, identification signs of a protected vehicle and GPS data in code messages.

The objective of the present invention is to provide an information-navigation system for intercepting the fusion, which would provide the ability to covertly intercept the fusion using widely used and convenient in practical use personal navigation devices with directional display (such as a magnetic compass) that do not require the use of special, easily identifiable external antennas .

At the same time, the created system should preserve all the advantages of the prototype associated with the lack of the need to use complex ground-based infrastructure and the ability to flexibly control the "trap" operation, including in the conditions of deliberate interference by intruders.

The essence of the invention is illustrated in figures 1-5.

Figure 1 illustrates the general principle of operation of the information-navigation system for intercepting the TCB.

Figure 2 presents the structural diagram of the subscriber complex.

Figure 3 shows the structural diagram of the search complex.

Figure 4 shows the front panel of the personal navigator "HARMIN GPS 38" with a view of the "Compass Page".

Figure 5 presents the view of the page "Direct Path" on the front panel of the personal navigator "HARMIN GPS 38".

Figure 1-3 used the following notation: 1 - subscriber complex; 2 - search complex; 3 - microcontroller; 4 - subscriber transmitter; 5 - subscriber transceiver module; 6 - subscriber unit of satellite navigation; 7 - personal navigator; 8 - block receiving code parcels; 9 - data format conversion unit; 10 - search transceiver module.

The information and navigation system for interception of the TCB under consideration contains a subscriber complex 1 installed on board the guarded vehicle, which includes a subscriber transceiver module 5, configured to receive and transmit signals and messages over a cellular mobile network, as well as with the possibility of exchanging data with a microcontroller 3. The microcontroller 3 is configured to receive notifications from the block of security detectors and transmit commands to block the movement of the guarded vehicle to its executive devices Twa (for example, on an immobilizer). One of the outputs of the microcontroller 3 is connected to the input of the subscriber transmitter 4, configured to emit code messages at a pseudo-randomly changing carrier frequency. A special case of such radiation is a hopping signal (L. M. Nevdyaev "Telecommunication technologies. English-Russian explanatory dictionary-guide, Moscow," Communication and Business ", 2002, p. 195). Code parcels can carry message category information, TCB identification codes, and GPS data.

The subscriber complex 1 also contains a satellite navigation subscriber unit 6 configured to receive and process GPS signals, the output of which is connected to an additional input of the microcontroller 3. The microcontroller 3 is configured to convert GPS data to both the code message format emitted by the subscriber transmitter 4 and in the format of the code parcel emitted by the subscriber transceiver module 5.

On board the rapid response vehicle, a search complex 2 is installed, which comprises a search transceiver module 10 connected to a cellular mobile communications network and a code parcel reception unit 8. Block 8 receiving code parcels is a hopping signal receiver based on a high-speed analog-to-digital converter and a digital processor of fast Fourier transform. Block 8 receiving code parcels made with the possibility of selection in the code parcels information about the category of messages, identification signs of the TCB and GPS data.

The search complex 2 also contains a data format conversion unit 9, the first input of which is connected to the output of the code parcel reception unit 8, and the second input is connected to the output of the search transceiver module 10. The output of the data format conversion unit 9 is connected to the input of the personal navigator 7, made with the possibility of receiving and processing GPS signals, as well as with the ability to determine the desired direction of travel and the remaining distance to the location of the TCB and display these parameters on the front panel screen.

The aforementioned subscriber 1 and search 2 complexes were implemented at the applicant enterprise as part of the current prototypes of the KARNET-2 and KARNET-3 radio search systems using the RIF STRING-200 security systems commercially available (certificate of conformity No. РОСС RU.ME30 .B.01020) and RIF STRING-202 (certificate of conformity No. РОСС RU.ME96.H00513), as well as commercially available computer products manufactured by the American company Analog Devices, Inc .: AD 1836 codec and digital fast processor Fourier transform ADSP 21161N series and SHARK, on the basis of which the block 8 receiving code parcels. Moreover, the names “Carnet®” and “Hopping®” are registered trademarks of the applicant company (certificates No. 202430 and 264485 respectively).

A feature of the proposed system is the use of a personal navigator 7 in the search complex 2, which does not require the use of special remote antennas and is simple and easy to use thanks to the arrow (by the type of magnetic compass) method of displaying the direction of movement to the target. This class of devices includes, for example, the well-known and available on the commercial market personal navigator "Garmin GPS 38" (www.badger.ru), hereinafter, for brevity, GPS 38.

Information about the direction of travel and the remaining distance in GPS 38 is provided by the so-called Compass Page. Its view is shown in figure 4. Target direction azimuth (BRG) and the remaining distance to the target (DST) are indicated at the top of the Compass Page immediately under the name of the final destination. In the considered embodiment of the practical application of GPS 38, such an ultimate goal of the rapid response vehicle movement is the point of location of the TCB (CAR is designated in FIG. 4). The distance to the TCB is calculated in a straight line connecting the current location of the GPS 38 carrier (i.e., the rapid response vehicle) to the location of the TCB. The coordinate data necessary for calculating the indicated distance are measured by the subscriber unit 6 of the satellite navigation and the personal navigator 7, which are part of the subscriber 1 and search 2 complexes, respectively.

A rotating “compass” is presented in the center of the Compass Page, showing the orientation of the direction of travel of the GPS 38 carrier relative to the cardinal points (E - east, S - south, W - west, N - north): the arrow in the center of the front panel screen shows the direction to the target relative to the direction of real movement of the vehicle rapid response. The position of the compass cartridge and the direction of the arrow change simultaneously (independently), displaying the actual direction of movement of the GPS 38 carrier on the TCB.

At the bottom of the Compass Page, heading data (TRK) is displayed — the direction of travel determined relative to the current position of the quick response vehicle and the speed (SPD) of the movement of the GPS 38 carrier.

A dark rhombus located in the center of the graphic index located at the bottom of the Compass Page shows the position of the GPS 38 media, and a long vertical bar that can move along the graphic index scale (G-mark) indicates the value of the deviation of the position of the GPS 38 media from a straight line indicating to a pre-selected destination on the TCB.

The equipment of cellular mobile networks used in the system under consideration — the subscriber transceiver module 5 and the search transceiver module 10 — are standard cell phone modules. Such modules are used, for example, in the terminal equipment of the REEF GSM-2000 cellular mobile communications network commercially available by the applicant enterprise (certificate of conformity POCC RU.ME30.B.01155).

Thus, all nodes used in the system are known and available in the commercial market. Accordingly, the possibility of practical implementation of the patented system is not in doubt.

Considered an information-navigation system for intercepting the TCB (figure 1) works as follows.

Participants in the operation "trap" for the search and interception of a TCB equipped with a subscriber complex 1 (Fig. 2) are one or more fast response vehicles, each of which has a search complex 2 (Fig. 3). External communication and navigation systems also participate in the operation: a cellular mobile network of a regional operator and a global satellite navigation system - GPS.

In case of unauthorized exposure to a guarded vehicle, for example, when it is attempted theft or theft from an alarm detector unit installed on board a guarded vehicle, an alarm signal (notification) is sent to microcontroller 3 of subscriber complex 1. The microcontroller 3 selects the specified notification and generates the corresponding alarm code message for the subscriber transmitter 4.

Subscriber transmitter 4 transfers this alarming code message to the carrier frequency, which is hop-tuned according to a pseudo-random law. A special case of using such a hopping carrier frequency is a hopping signal. Further, for simplicity, we can assume that the subscriber transmitter 4 radiates exactly the hopping signal.

The simplest example of the possible structure of the emitted alarm code message is the following:

MARKER (a common set of characters for all packages in this system);

SIGN (characters indicating the category of the message; in this case, the category of the message is “Alarm code message sign”).

The remaining parts of any code message depend on the transmitted SIGN (i.e., on the category of message). In this particular case of the formation of an alarm code message, the following parts following the SIGN are:

ADDRESS (a character set that identifies the subscriber transmitter 4 that generated the alarm code message, that is, the identifying codes of the protected vehicle, which may include the brand and color of the protected vehicle, last name and contact phone number of the owner of the protected vehicle or one of the users);

INFORMATION (a character set specifying a security detector of a security detector unit, the operation of which caused the formation of an alarm code message, as well as the type of operation of this security detector);

CHECK AMOUNT (set of control characters).

The formation of a hopping signal carrying an alarming code message is carried out using the well-known procedure described in a number of inventions for which the applicant company previously obtained patents: RU No. 2228275, 60 R 25/10, G 08 B 25/10, G 08 B 29/16, RU No. 2228274, 60 R 25/00, RU No. 2231458, 60 R 25/00, 60 R 25/10, G 08 C 13/00 and others.

At the same time, an alarm message is generated in the microcontroller 3 in the format of a cellular mobile network, for example, an SMS message intended for distribution to one or more users of a protected vehicle. Using a subscriber transceiver module 5, this message is broadcast and received on a remote subscriber terminal, for example, on a cell phone of a protected vehicle user (not shown in Figs. 1-5).

The user, having assessed the situation, can apply with an official statement to law enforcement agencies, for example, to the nearest police on-duty unit (from now on, the guarded vehicle is considered as TCB).

Of course, the reason for the user to file an official application with law enforcement agencies does not have to be to receive an SMS message. An official application to law enforcement agencies will be submitted by the user, for example, after detecting a hacked garage and the disappearance of a guarded vehicle. When submitting an official application to law enforcement, the user can send an SMS message on board the TCB designed to block the movement of the TCB.

Having received such an SMS message, the subscriber transceiver module 5 transmits it to the microcontroller 3, which generates the corresponding command to block the movement of the TCB. The specified command is sent to actuators, for example, an immobilizer, which blocks the TCB engine. This significantly complicates the task of the hijacker and creates more favorable conditions for the crews of the rapid response vehicles, carrying out the interception of fusion (operation "trap"),

When intercepting a TCB, you need to know its location. Moreover, it is not the absolute geographical coordinates of the TCB that are important, but its location relative to the rapid response vehicle. The accuracy of determining such a relative location should be high enough so that at the final stage of interception it would be possible to provide visual contact of the fast response vehicle crew with the TCB. At the same time, it is important for crews of a rapid response vehicle:

- do not unmask yourself;

- not give out in advance their intentions;

- Do not provoke intruders to inappropriate actions.

In the prototype system, the task of determining the relative location of the TCB was solved using a two-stage procedure. First, the location of the TCB was “roughly” determined at the information center for collecting and processing information using the ground-based infrastructure of base stations, and then the direction finding of the TCB was carried out from the board of the fast response vehicle, with the help of which the current location of the TCB relative to the quick response vehicle was determined.

In the proposed information and navigation system for intercepting the TCB, this task is solved in one step - directly on board the vehicle rapid response.

The source of coordinate information about the current location of the TCB is the subscriber unit 6 of satellite navigation, which is part of the subscriber complex 1.

The source of information about the current location and the direction of movement of the fast response vehicle is a personal navigator 7, which is part of the search complex 2, installed on board the quick response vehicle.

Having received and processed signals from satellites in the normal mode, the satellite navigation subscriber unit 6 transmits the output information about the location of the TCB in the geographic coordinate system to the microcontroller 3, which converts this output information into the code message format emitted by the subscriber transmitter 4 via the hopping signal.

The microcontroller 3 is also programmed to convert the output information about the location of the TCB in the geographic coordinate system to the format of an SMS message that is broadcast by the subscriber transceiver module 5. The specified SMS message is received by the user and indicates the current location of the TCB. The same SMS message can be received by the search complex 2.

The simplest example of a hopping signal sending format with information about the location of the TCB may include the following components:

MARKER (coincides with the MARKER when transmitting the binary code of the alarm code message);

SIGN (as with the transmission of the binary code of the alarm code message, these are symbols indicating the category of the message; in this case, the category of the message is “Sign of the location of the TCB”).

ADDRESS (as in the case of transmitting the binary code of the alarm code package, these are the characters indicating the subscriber transmitter 4, which generated the code package with information about the location of the TCB, that is, codes of identification signs of the TCB, which may include the brand and color of the TCB, the name and contact number of the owner TCB or one of the users);

SIGNALS OF GPS-RECEIVER (this is directly the coordinate code of the current location of the TCB);

CONTROL AMOUNT (corresponding set of control characters).

A hopping signal containing the indicated information is received by the code parcel reception unit 8, which is a hopping signal receiver configured to select message category information, UTS identification signs and GPS data in the code parcels. Passing this selection, the code messages are sent to the data format conversion unit 9, which is a conventional converter. The specified data format conversion unit 9 converts the received code message into the format used by the personal navigator 7. It is the use of the hopping signal that provides system noise immunity when an attacker uses a jammer that suppresses message transmission, for example, SMS messages over a cellular mobile network.

If the jammer is not used and the cellular mobile network provides SMS messages with the coordinate code of the current location of the TCB, then the hopping signal is used by the personal navigator 7 as an additional source of information to determine the relative location of the TCB and the quick response vehicle. The code of the current location of the TCB transmitted over the cellular mobile network (as an SMS message) is received in the search complex 2 by the search transceiver module 10. It should be noted that, in addition to receiving the code of the current location of the TCB from the subscriber transceiver module 5 , the search transceiver module 10 can also play the role of a conventional cell phone for communication with each other by the crews of various fast response vehicles during the trap operation.

From the output of the search transceiver module 10, the code for the current location of the TCB is transmitted to the data format conversion unit 9 and converted in the indicated data format conversion unit 9 into one of the formats used by the personal navigator 7.

The personal navigator 7, which is part of the search complex 2, receives and processes signals from navigation satellites in the normal mode (using the GPS receiver included in it). These signals are necessary to determine the current coordinates of the vehicle quick response and then the relative coordinates of the TCB (the angle of the direction of movement on the TCB and the remaining distance between the TC quick response and TCB).

Let us consider in more detail the work of the personal navigator 7. A feature of this device is its ease of use - to provide movement by the shortest path to a given point. In the trap operation, such a given point is the point of the current location of the TCB. The current location of the TCB can either remain constant if, prior to the interception, the user was able to remotely block the movement of the TCB, or change if for some reason this could not be done.

For concreteness, we consider the operating principles of the aforementioned GPS 38 (discussed, for example, in the "User Guide", www.badger.ru).

GPS 38 uses angular degrees to indicate and control the direction of travel, measured (just like on a magnetic compass) clockwise from the direction to the North (N). North (N) is designated as 000 °. East (E) - 090 °, South (S) - 180 °, West (W) - 270 °. Each of the twenty-four GPS satellites makes two orbits around the Earth in a precision orbit per day and transmits information about itself and its condition to the Earth (the so-called almanac). To determine the position on the ground, the GPS receiver, which is part of GPS 38, needs to “watch” at least three GPS satellites simultaneously for some time.

Since GPS satellites can only be "watched" above the horizon, you need to know which GPS satellites will be visible at any given time. Using almanacs (information about all GPS satellites) stored in the GPS 38 non-volatile memory, the latter can calculate the position and distance to any of the GPS satellites.

However, in order to use data from the almanac, data on its approximate starting location, which is considered to be known in advance, must be entered into GPS 38. This process is called initialization and takes several minutes.

Once the approximate starting location of the GPS 38 has been determined, it can "observe" in the sky from four to eight GPS satellites. GPS 38 automatically installs GPS satellites, from which the strongest signal is received, and henceforth GPS 38 works with these GPS satellites. If during the movement of the GPS 38 carrier some of the GPS satellites turn out to be closed buildings, foliage or go over the horizon, GPS 38 automatically switches to communication with other GPS satellites and continues to work.

To determine the speed of the vehicle of the GPS 38 fast response vehicle, at least four GPS satellites must be "observed" simultaneously.

GPS 38 has a special connector for exchanging data with other satellite navigation devices. In the system under consideration, the output of the data format conversion unit 9 is connected to this connector, from which external data is received (in the required format) in the personal navigator 7. Such external data is the converted current coordinates of the TCB, measured using the satellite navigation subscriber unit 6 and transmitted either by the subscriber transmitter 4 (via the hopping signal) to the code parcel reception unit 8, or by the subscriber transceiver module 5 (via the cellular mobile network) to the search transceiver module 10.

To use this external data, the GPS 38 has an External Exchange mode. The "External exchange" settings page is called up from the "INTERFACE" main menu item. GPS 38 supports five different protocols for receiving data from external devices.

Each of the protocols is described by a separate screen page on which the operator of the search complex 2 can set the required data conversion parameters.

Very useful for speeding up the operation "trap" is one of the standard modes of GPS 38 - the mode of providing movement to the goal in the shortest way using the "Direct Path" page (figure 5). On this page, the main attention is paid to the control of deviation parameters from a predefined direct path to the target (i.e., to the TCB). The azimuth of the direction to the target (BRG), the remaining distance to it (DST), the azimuth of the direction of movement (TRK) and the speed of movement in a straight line (SPD) are indicated at the top of the page. Estimated travel time (ETU) and recommended speed (VMG) are shown at the bottom of the page.

In the process of moving to the intended target, in the center of the page the "highway" is conditionally displayed, as if "laid" to the target. The large arrow below the highway image shows the true course relative to the direct direction to the target (POINTER TO WAYPOINT). To maintain the correct course, it is necessary to constantly combine the indicated arrow with a black rhombus on the scale of the graphic indicator. When leaving the factory, one division of the GPS 38 graphic corresponds to 0.05 miles of deviation from the straight line of a predetermined path. The entire scale corresponds to a deviation of 0.25 miles (left or right). If the deviation from the straight line of the predetermined path exceeds 0.25 miles, an arrow appears at the corresponding end of the scale suggesting that you return to the correct course.

When approaching the final destination of the route (that is, to the TCB), a conditional image of the “finish line” appears on the “highway”. When the image of the “finish line” reaches the bottom of the image of the “highway”, it means that the goal has been achieved (that is, the TCB is somewhere nearby).

The use of GPS 38 does not require any professional skills from the search engine operator 2. GPS 38 is available for any crew member of the rapid response vehicle. GPS 38 does not use any external unmasking antennas.

Thus, the proposed technical solution allows us to solve the problem of the present invention - to create an information-navigation system for intercepting the TCB, providing the possibility of covert interception of the TCB using widely used, convenient in practical use personal navigation devices with a direction indicator (such as a magnetic compass). At the same time, the proposed system retains all the advantages of the prototype associated with the lack of specialized ground-based infrastructure and with the possibility of flexible autonomous control of the rapid response vehicle movement in the "trap" operation.

Claims (3)

1. An information-navigation system for intercepting stolen vehicles, comprising a subscriber complex installed on board the guarded vehicle, which contains a subscriber transceiver module configured to receive and transmit radio signals from a cellular mobile network, a microcontroller connected to a subscriber transceiver module, and made with the possibility of receiving notifications from the block of security detectors and transmitting commands to block the movement of the guarded transport funds for its executive devices, as well as a subscriber transmitter that is connected to one of the outputs of the microcontroller and is configured to emit code messages containing information about the message category and identification codes of the protected vehicle at the hopping pseudo-randomly changing carrier frequency, and installed on onboard fast response vehicles search complexes, each of which contains a search transceiver module, connect connected to the cellular mobile communications network, and a code parcel reception unit, configured to receive on the radio frequency hopping pseudo-randomly varying carrier frequency of the code parcels from the subscriber transmitter, characterized in that the subscriber complex includes a satellite navigation subscriber unit, the output of which is connected to an additional the input of the microcontroller, configured to convert satellite navigation data into the format of the code message emitted by the subscriber transmitter, and the format of the code parcel emitted by the subscriber transceiver module, and a data format conversion unit is introduced into each search complex, the first input of which is connected to the output of the code parcel reception unit, and the second input to the output of the search transceiver module, and a personal navigator configured to receive and processing global satellite navigation signals, determining the required direction of travel and the remaining distance to the location point of the stolen vehicle and display parameters shown on the front panel of the personal navigator, while the input of the latter is connected to the output of the data format conversion unit. 2. The system according to claim 1, characterized in that in the subscriber complex, the subscriber transmitter is configured to radiate a hopping signal into the radio air with code messages carrying information about the message category, identification codes of the protected vehicle and GPS data. 3. The system according to claim 1, characterized in that in each search complex the code message receiving unit is a hopping signal receiver configured to select message category information, protected vehicle identification features and GPS data in code messages.

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