RU2349472C1 - Satellite safery and search system - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to monitoring, tracking and controlling ground transport vehicles (TV). The proposed system incorporates the TV subsets integrated by cellular transmission circuitry, for example GSM-circuit, response complexes and dispatcher center. The TV subset comprises a safety anti-theft system subsystem with the central control board connected to the ignition system, as well as radio beacon securely mounted on TV with its activation input connected to the first output of the central control unit, the cellular mobile communication subset connected to the switching unit allowing the exchange of signals with the safety anti-theft system subsystem central control unit and satellite navigation unit, for example GPS-receiver connected with the switching unit. The response complex comprises the mobile cellular communication terminal. The dispatching center comprises the central cellular mobile communication terminal with its inputs connected to the operator post station Additionally the subset includes a relaying unit allowing reception of signals from radio beacons of the other TV subset complexes and connected to appropriate input and output of the switching unit. The radio beacon allows initial warning about unauthorised TV use, confirming the fact of theft and TV direction finding by the aforesaid response complexes. Apart from mobile cellular communication system, noise-immune radio channels are used requiring no stationary base ground stations.

EFFECT: simpler system allowing search and tracking of TV when intruders use noise sources capable of neutralising standard mobile cellular communication and satellite navigation systems.

7 cl, 5 dwg

Description

The invention relates to systems for monitoring, tracking and control of ground vehicles (TS) and can be used for centralized monitoring of the condition and location of serviced vehicles, remote control of nodes and units of vehicles, as well as for searching for vehicles and assisting the driver and passengers in emergency situations , for example in cases of theft or theft of the vehicle.

There is a known method of monitoring and control of vehicles carrying cargo, based on the determination of the specified coordinates of the vehicle, in which each controlled vehicle is assigned a number and a route, the signals of the global satellite navigation system (GPS) are received on the vehicle, and the current coordinates are calculated based on the received navigation signals TS. Information on the current coordinates of each monitored vehicle is converted into an electrical signal for transmission over a cellular mobile network, for example, over a GSM network, this signal is transmitted discrete in real time over a cellular mobile network to a dispatch center, where information is received, it is processed, storage and display. In the event of an emergency, the current and specified coordinates of the monitored vehicle are displayed on an electronic map of the area, and upon receipt of a signal message from the vehicle driver, the semantic content and time of transmission of the signal message, as well as the specified number of the given vehicle, are also displayed. Based on the analysis of the information received, they decide on operational assistance to the driver (RU No. 2157565, G08G 1/123).

The disadvantage of this technical solution is the loss of information about the location of the monitored vehicle when it enters the zone of lack of radio visibility, which leads to data distortion, delays and errors in decision making. Because of this, the reliability and efficiency of vehicle management are reduced.

Reliability and efficiency of decision-making on monitoring and controlling the vehicle from the dispatch center are enhanced by using another known method of tracking and controlling the vehicle, in which GPS signals are received on the controlled vehicle, the current coordinates, time and speed of the vehicle are determined, and an information packet is generated with by including in it an additional code of the vehicle number and the status of individual TS subsystems, they convert the specified information packet into a signal for real-time transmission via GSM- Networks to the dispatch center, periodically transmit the specified information from one or more monitored vehicles, receive this information in the dispatch center, process it, store and display it on an electronic map of the area, and if an emergency occurs, send the corresponding message in the form of a packet of information to the corresponding monitored TS through the GSM network, when receiving a packet of information on the TS, enable / disable individual subsystems or establish two-way voice communication over the GSM network, while divide the moments of the vehicle’s transition from / to the radio-visibility zone of the GSM network and, in the interval between the time the vehicle leaves the radio-visibility zone and return to the radio-visibility zone to the vehicle, the corresponding information packets are stored and accumulated, and upon entering the radio-visibility zone, the accumulated information packets are transmitted to the control room the center where they are processed, and make decisions on the management of the vehicle. The moment of the transition of the vehicle from the zone / to the radio-visibility zone of the GSM network is determined by comparing the level of the analog signal converted to digital form with a given level and when the first is above the second, the moment of entry into the radio-visibility zone is recorded, and when the second is above the first, the moment exit from the radio visibility zone (RU No. 2217797, G08G 1/123).

The specified method provides a more reliable and stable vehicle tracking than the aforementioned analogue. However, both of these methods have a fundamental drawback due to tight binding to the GSM network and to the signals of GPS navigation satellites. As you know, GSM networks are vulnerable to intentional interference. Systems using GPS signals can also be locally neutralized by interference, even microwatt power. In addition, they do not work well in narrow city streets, in tunnels, in wooded areas, that is, in conditions of radio shading.

The technical solution according to the patent RU No. 2288509, G08B 25/10, G08G 1/13, in which the signals of the global satellite radio navigation system are received on board each controlled vehicle, for example GPS signals, is used to calculate the current navigation parameters on the basis of the data contained therein. - the coordinates and speed of the vehicle, through the vehicle’s onboard sensors determine the state of its components and assemblies and changes in this state, and with the given state changes generate the corresponding notifications, by supplementing notices by service information fields convert notices into messages, the service information fields of which record codes of identification signs, current navigation parameters and parameters characterizing the state of the units and assemblies of the vehicle, transfer these messages to high-frequency carriers and transmit signals carrying these messages over the air to the control room center, using for this purpose the onboard terminal of a cellular mobile network, for example a GSM network, and / or the onboard terminal of a specialized relay radio-direction finding network, the dispatch center receives the indicated signals, decodes them, digitally processes the information with coordinates and constructs the vehicle’s trajectories, displays the indicated trajectories on the background of fragments of an electronic map of the terrain accompanied by text information, analyzes the received trajectories and makes decisions, on the basis of which command messages are generated for controlled vehicles containing codes of the corresponding commands, for example, a code for the command to block vehicle movement, transmit the specified command messages on the cellular mobile communication network and / or through a specialized relay-radio direction finding network on board the controlled vehicle, receive the specified command messages on board the controlled vehicle, decode them, and then act on the relevant executive bodies, for example, the immobilizer, with commands, codes which are contained in the received command messages, while using the base stations of the relay-radio direction-finding network, radio monitoring of the radiation on-board terminals of a specialized relay-radio-direction finding network updated on controlled vehicles, for which the energy, frequency and time parameters of radiation from the board of each controlled vehicle are measured, the values of these parameters are transmitted to the dispatch center, where the bearing is determined to the radiation source from this base station of the relay-radio-direction finding network and use the obtained bearing values from several base stations of the relay-radio-direction finding network to calculate the current The positions of the monitored vehicle carry out logical processing of the received signals, and the results of this processing are used to generate the commands sent to the board for switching the on-board terminal of the mobile cellular communication network and / or on-board terminal of a specialized relay-radio-direction finding network, as well as for regulating the radiation parameters of the on-board terminal specialized relay-radio-direction finding network, convert these commands into on-board terminal control codes with new mobile communication network and / or on-board terminal of a specialized relay-radio-direction finding network and write these control codes in command messages broadcast on a cellular mobile communication network and / or on a specialized relay-radio-direction finding network on board the vehicle, and after receiving the indicated command on board the vehicle messages and decoding of the control codes contained therein act by control codes on the on-board terminal of cellular mobile communication and / or on-board terminal of a specialized relay radio-direction finding network, causing the on / off on-board mobile cellular communication terminal and / or on-board terminal of a specialized radio-direction-finding network to turn on / off, or increasing / decreasing the power and duration of radiation sessions of an on-board terminal of a specialized radio-direction-finding network.

A system that implements the above method is the closest analogue of the present invention.

The main disadvantage of the closest analogue is the difficulty of its practical implementation, which is associated with the need to deploy and maintain a geographically distributed relay-radio direction finding network.

The present invention seeks to remedy this drawback.

The subject of the present invention is a satellite search and security system, comprising, connected to each other via a cellular mobile communication network, for example, a GSM network, subscriber complexes TC, response complexes and a dispatch center, each subscriber complex comprising a security and anti-theft subsystem with a central control unit connected to the ignition unit, as well as a radio beacon covertly mounted on the vehicle, the activation input of which is connected to the first output of the central control unit, subscriber a cellular mobile communication terminal associated with a switching unit configured to exchange signals with a central control unit of a security and anti-theft subsystem, and a satellite navigation unit, for example, a GPS receiver connected to a switching unit, each response complex contains an object mobile cellular communication terminal, and the dispatch center contains a central mobile cellular communication terminal, the input of which is connected to the operator’s workstation, while each subscriber complex a relay unit has been introduced, configured to receive signals from radio beacons of subscriber complexes of other TS serviced by the system and connected to the corresponding output and input of the switching unit, while each of the beacons is configured to provide radiation modes covering the initial notification of an attempt to unauthorized use of a serviced vehicle, confirmation the fact of theft and direction finding of the vehicle by response complexes.

Particular features of the invention are as follows.

The relay unit of each subscriber complex contains a subscriber receiver configured to receive signals from the radio beacons of the subscriber complexes of others serviced by the TS system, and a microcontroller, the first input and output of which are the input and output of the relay unit, and the second input is connected to the output of the subscriber receiver.

In each response complex, a data format matching unit and a personal navigator are introduced, configured to receive, process and display signals from a satellite navigation system, such as GPS, the output of which is connected to the input of a data format matching unit via an object mobile cellular communication terminal, as well as a tracker associated with a personal navigator and made with the possibility of direction finding radio beacons of subscriber complexes serviced by the vehicle system and measuring ranges about them.

The control center includes a digital signal processing unit, the input of which is connected to the output of the central terminal of cellular mobile communication, and the output is connected to the operator’s workstation.

The security and anti-theft subsystem, in addition to the central control unit, includes sensors configured to determine the status of the serviced vehicle and connected by outputs to the information inputs of the central control unit, as well as executive bodies configured to affect the serviced vehicle and connected by inputs to the control outputs the central control unit, the label and the radio-associated user identification unit, the input and output of which are connected to the corresponding outputs Valid y and the central control unit.

The beacon of the subscriber complex of each of the vehicles serviced by the system is capable of emitting signals with a randomly varying carrier frequency, for example, hopping signals, and the subscriber receiver of the relay unit is capable of receiving and processing these signals.

The response complex tracker is configured to emit, receive and process signals with a randomly varying carrier frequency, for example, hopping signals.

The objective of the present invention is to provide a system that is simpler in practical implementation than the closest analogue, while maintaining the main advantage of the latter - the ability to search for and maintain serviced vehicles in the context of deliberate interference by intruders capable of neutralizing standard cellular mobile communication systems and satellite navigation systems.

The provided technical result consists in the application, along with the cellular mobile network, of noise-protected redundant radio channels that do not require the deployment of stationary base station networks on the ground.

The invention is illustrated in figures 1-5.

Figure 1 illustrates the general principles of construction of the system in question.

Figure 2 presents the structural diagram of the construction of the subscriber complex.

Figure 3 shows the structural diagram of the construction of the response complex.

Figure 4 shows a structural diagram of the construction of a control center.

Figure 5 shows the structural diagram of the construction of the relay unit.

Figure 1-5 used the following notation: 1 - subscriber complex; 2 - response complex; 3 - dispatch center; 4 - security and anti-theft subsystem; 5 - a radio beacon; 6 - central control unit; 7 - sensors; 8 - switching unit; 9 - mobile cellular subscriber terminal; 10 - relay unit; 11 - subscriber receiver; 12 - microcontroller; 13 - block satellite navigation; 14 - the central terminal of cellular mobile communications; 15 - block digital signal processing; 16 - an automated workplace of the operator; 17 - ignition unit; 18 - user identification unit; 19 - mark; 20 - executive bodies; 21 - object terminal mobile cellular communications; 22 - data format matching unit; 23 - personal navigator; 24 - tracker.

The considered satellite security-search system (Fig. 1) contains interconnected via a mobile cellular network, for example, GSM-network, subscriber complexes 1, response complexes 2 and a control center 3.

Subscriber complexes 1 (figure 2) are installed on serviced vehicles. Each subscriber complex 1 contains a security and anti-theft subsystem 4 with a central control unit 6 connected to the ignition unit 17. The subscriber complex 1 also includes a beacon covertly mounted on the vehicle 5, the activation input of which is connected to the first output of the central control unit 6, satellite navigation unit 13, for example, a GPS receiver, and a mobile cellular subscriber terminal 9 connected to the switching unit 8, made with the possibility of exchanging signals with the Central control unit 6 of the security and anti-theft subsystem 4.

In addition, the subscriber complex 1 includes a relay unit 10 (Fig. 5), comprising a subscriber receiver 11, configured to receive signals from the beacons 5 included in the subscriber complexes 1 of the other serviced by the claimed vehicle system, and a microcontroller 12, the first input and the output of which is the input and output of the relay unit 10, and the second input is connected to the output of the subscriber receiver 11.

In the embodiment of FIGS. 2-5 presented below, the following functional elements are used to construct a satellite security and search system and its components:

- the structure of the security and anti-theft subsystem 4, in addition to the central control unit 6, includes sensors 7 and actuators 20, the outputs and inputs of which are connected, respectively, to the information inputs and control outputs of the central control unit 6, as well as radio-linked to the label 19 a user identification unit 18, the input and output of which is connected to the corresponding output and input of the central control unit 6;

- response complex 2 (Fig. 4) contains a series-connected object terminal 21 of cellular mobile communications, a data format matching unit 22, and a personal navigator 23 configured to receive, process, and display signals from a global satellite navigation system, such as GPS, as well as associated with personal navigator 23 tracker 24, made with the possibility of direction finding of the beacon 5 and measuring the distance from it;

- the dispatch center 3 (Fig. 3) comprises a centrally connected central mobile cellular communication terminal 14, a digital signal processing unit 15, and an operator workstation 16, the output of which is connected to the input of the central mobile cellular communication terminal 14.

There are other possible options for constructing these components of the considered system (figure 1). In particular, for a long time the Caesar Satellite search and security satellite system (www.csat.ru) has been in practical use, which, like the system under consideration, contains subscriber complexes connected to each other via a mobile cellular network of the GSM standard 1, response complexes 2 and dispatch center 3.

The security and anti-theft subsystem 4 is built according to the standard scheme used in most security and anti-theft systems produced by the applicant company ("Automotive Security Systems", catalog 2007, ALTONIKA LLC, issue No. 10). As sensors 7 can be used any instrumentation transducers that allow you to determine the status of various components and assemblies serviced by the vehicle system and changes in these states. Sensors 7 can be, in particular, security detectors - technical means of security alarms, which serve to detect unauthorized exposure to a guarded object, which in this case is a vehicle. The role of security detectors can be played, for example, by a shock sensor, a volume sensor, limit switches.

As the executive bodies 20, various types of immobilizers and blocking relays can be used, which are widely represented in the range of serial products of the applicant enterprise ("Car Security Systems", catalog 2005, ALTONIKA LLC, issue No. 8, pp. 8-12).

The central control unit 6 is a programmable microprocessor and is used in almost all security and anti-theft subsystems 4.

Subscriber terminal 9 of cellular mobile communications is a part of serial information and security systems "REEF GSM" of models 1000 and 2000 ("Car security systems", LLC "ALTONIKA", catalog 2005, issue No. 8, p.20, 21), and the unit 13 satellite navigation is one of the components of the REEF GSM model 3000 serial satellite information retrieval systems (Car Security Systems, ALTONIKA LLC, catalog 2005, issue No. 8, pp. 22-24).

As the switching unit 8, a common multiplex bus, in particular a CAN bus, can be used. The CAN bus (Controller Area Network) was developed by BOSCH in the mid-eighties and is now accepted as the standard for all automotive electronics manufacturers in Europe. The element base supporting CAN technology is manufactured in industrial design (www.gaw.ru).

The beacon 5 (“bookmark”) is covertly installed, for example, under the skin in the vehicle compartment and has virtually no unmasking features. In this case, the beacon 5 is configured to provide three radiation modes:

- the mode of initial notification of an attempt to unauthorized use of a serviced vehicle;

- mode confirmation of the fact of theft;

- regime for providing direction finding of vehicles with response complexes 2.

In the initial notification mode of an attempt to unauthorized use of a serviced vehicle for beacon 5, a long period of radio silence, short-term broadcasting and low radiation power are provided. Due to this economical mode of operation, the power source of the beacon 5 can serve without replacement for a long time (more than a year). At the same time, users of the vehicle may not even know in which place the beacon 5 is installed.

The technical solutions used in the beacon 5, based on the use of the hopping signal, provide a long range and high noise immunity of the proposed system.

These solutions are protected by patents, for example: RU №2220859, В60R 25/00, G08В 25/00, RU №2228860, В60R 25/00, G08В 25/10, RU №2244642, В60R 25/00, and are implemented in a commercially available radio channel security alarm equipment "RIF STRING-202" (certificate of conformity No. ROSS RU.ME96.H00513).

At the same time, the digital signal processing unit 15, which provides the processing of hopping signals, can be implemented using commercially available computer products manufactured by the American company Analog Devices, Inc .: AD 1836 codec and ADSP 2116 IN SHARK digital fast Fourier transform processor .

All of the functional nodes of the dispatch center 3 shown in FIG. 3 are part of the radio channel monitoring and tracking system of the vehicle, protected by RU patent No. 2240938, B60R 25/00, G08B 25/10.

Included in the response complex 2 (FIG. 4), the circuit “object terminal 21 of cellular mobile communication → data format matching unit 22 → personal navigator 23” is used in the layout of the information and navigation system of the patent RU No. 2266217, B60R 25, created at the applicant enterprise / 10, G08B 25/10. A feature of this information-navigation system is the use of a personal navigator 23 in it, which does not require the installation of large-sized remote antennas, which is simple and easy to operate, thanks to the arrow (as a 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", further, for brevity, GPS-38 (www.badger.ru).

The tracker 24 installed on the response vehicle is a direction finding device that includes a direction finding antenna with blocks for computer processing and displaying information about the range and bearing of the beacon 5 installed on the served vehicle. A similar device is used in the well-known LO / JACK radio search system (Operation Manual "LO / JACK Radio Search System", Moscow, 1998).

Thus, all the functional units shown in FIGS. 1-5 are known and are commercially available. Therefore, the possibility of practical implementation of the proposed system is not in doubt.

The considered satellite security and search system operates as follows.

Participate in the protection of vehicles serviced by the system (Fig. 1):

- installed on serviced vehicles subscriber complexes 1 (figure 2);

- response complexes 2 placed on the response vehicle (Fig. 4);

- dispatch center 3 (figure 3).

The global satellite navigation system, GPS, also takes part in the work of this system. Along with the ability to exchange data via a cellular mobile network, subscriber complexes 1 can be used for each other as repeaters of signals emitted by subscriber complexes 1.

Next, the problem of searching and intercepting a stolen vehicle (TCB) is considered. In case of unauthorized exposure to one of the serviced vehicles (for the purpose of its theft or theft) from the security and anti-theft subsystem 4 installed on board the serviced vehicle, a radiation activation signal is received at the input of the beacon 5, covertly installed on the indicated vehicle.

As noted above, the beacon 5 (“tab”) has three radiation modes:

- the mode of initial notification of an attempt to unauthorized use of a serviced vehicle;

- mode of confirmation of the fact of theft;

- mode for providing direction finding of vehicles with response complexes 2.

In the first two modes, the radiation of the beacon 5 is of short duration, has a large duty cycle and a relatively low power. These modes are aimed at conveying information to the dispatch center 3 and the user of the serviced vehicle about an attempt to unauthorized use of the serviced vehicle and indicate, even roughly, its location. The duration, duty cycle and radiation power sets the Central control unit 6. The relatively short duration, power and high duty cycle of radiation make it difficult for attackers to detect the presence of a beacon in the vehicle 5.

The beacon 5 uses an interference-free signal with jumping frequencies. This is usually a hop signal. The generation, emission and processing of the hopping signal are carried out using the well-known procedure described in a number of inventions for which the applicant company received patents: RU No. 2228275, B60R 25/10, G08B 25/10, G08B 29/16, RU No. 2228274 , B60R 25/00, RU No. 2231458, B60R 25/00, B60R 25/10, G08C 13/00.

The initial notification mode of an attempt to unauthorized use of a serviced vehicle is activated in the beacon 5 automatically after the sensors 7 of the anti-theft and alarm subsystem 4 are triggered. The alarm signals (notifications) they send are sent to the central control unit 6, which generates the corresponding alarm code message for the beacon 5. In the corresponding the fields of this message include the codes of identification features of the controlled vehicle (state number) stored in the central control unit 6 , brand, color, owner information and other data) and vehicle status parameters codes (intrusion into the cabin, unauthorized opening of the hood, trunk and a number of others), which in the simplest case are determined in the central control unit 6 by the sensor number 7 from which it came alarm The central control unit 6 sends the generated alarm message to the input of the beacon 5 and, through the switching unit 8, to the input of the mobile cellular subscriber terminal 9.

If the specified mobile cellular subscriber terminal 9 is suppressed by interference, then an alarm message is sent on the air only through the beacon channel 5 protected from jamming.

The signal sent by the beacon 5 is received by the relay unit 10 of the relay of one or more subscriber complexes 1 (installed on neighboring vehicles serviced by the system) and fed to the input of its subscriber receiver 11 (Fig. 5). An alarm message is emitted from this signal, carrying encoded identification information about the vehicle on which the beacon 5 is installed (for example, state number, brand, color and surname of the owner of the serviced vehicle). This encoded identification information is fed to the first input of the microcontroller 12, to the second input of which from the satellite navigation unit 13 (GPS receiver) —through the switching unit 8 — a signal is transmitted that carries information about the location of this subscriber complex 1. The microcontroller 12 generates a single code alarm message containing identification information and data on the location of the subscriber complex 1, and transmits this single code message through the switching unit 8 to the subscriber terminal 9 cellular th mobile communication. The specified mobile mobile subscriber terminal 9 converts this single code message into a format used in a mobile mobile network, for example, an SMS message format, and sends it over the specified mobile mobile network to a control center 3.

In the coverage area of the beacon 5 of the subscriber complex 1, which sent the initial alarm message, there may be several subscriber complexes 1. The signal relayed by each such subscriber complex 1 carries information about the location of this subscriber complex 1 received by its satellite navigation unit 13. If the initial alarm message does not contain coordinate information (due to suppression by the attackers of the satellite navigation unit 13), then the totality of the specified coordinate information from relay subscriber complexes 1 allows, albeit roughly, to determine the location of the vehicle that sent the initial alarm message.

In the dispatch center 3 (Fig. 3), the signals received through the cellular mobile network are received by the central terminal 14 of the mobile mobile communication, pre-processed, and fed to the input of the digital signal processing unit 15. In block 15 of digital signal processing, primary signal processing is first performed, which includes analog-to-digital conversion and digital filtering (to increase the signal-to-noise ratio). From the received code message, codes of navigation parameters characterizing the location of subscriber complexes 1 that have performed the role of repeaters, as well as identification and service codes characterizing both subscriber complex 1 — the source of the alarm message and the neighboring subscriber complexes 1 — sources of relayed signals, are extracted. Further, secondary digital processing of this information is carried out, which allows you to identify the source of the alarm message and by the location of the neighboring subscriber complexes 1 - repeaters - indirectly (roughly) determine the location of the vehicle that has been subjected to unauthorized influence.

The processed digital data is received for display and decision-making at the operator's automated workstation 16. In it, in accordance with the obtained codes of identification signs, a request is generated to call the text data on the serviced vehicle stored in the memory of the workstation 16 of the operator. At the same time, in accordance with the received codes of the navigation parameters, a request is generated to call fragments of the terrain map corresponding to the measured navigation parameters stored in the memory of the workstation 16 of the operator. At the same time, fragments of a digital model of a road network are usually used as fragments of a map of the terrain.

The information caused by these requests is converted into a two-dimensional image format and displayed on the monitor of the operator’s workstation 16. The view of this two-dimensional image should be convenient for analysis by the operator of the control center 3. Text information (for example, state number, color, brand of the vehicle being serviced, its geographical coordinates, owner information and other information) can also be displayed on the monitor screen.

The information obtained allows the operator of the dispatch center 3 to quickly identify a responsible user, for example, the owner of an unauthorized vehicle. On a cellular mobile network, the operator of the dispatch center 3 reports the fact of unauthorized exposure to this user and waits for his response.

If the user replies that the alarm message turned out to be a false alarm, for example, that the vehicle is currently in his field of vision and nothing dangerous is happening to him, the cat just jumped on the hood, then the received information is recorded in the long-term memory of the operator’s workstation 16. At this, the actions of the operator of the dispatch center 3 end.

If the user is not able to either confirm the fact of unauthorized influence on the vehicle, or to exclude such a possibility, then the dispatch center 3 goes into standby mode. The nature of the operator’s subsequent actions depends on the further development of events.

So, if an attacker managed to get into the vehicle’s interior and turn on the ignition, then a command is sent from the ignition unit 17 to the central control unit 6, by which the central control unit 6 generates and sends to the user identification unit 18 the command to start polling 19. If during the set the time tag 19 is not presented for identification or the code contained in the signal tag 19 does not match the identification code stored in the memory of the user identification unit 18 (or - depending on the design of the anti-theft alarm subsystem 4 - in the memory of the central control unit 6), the central control unit 6 generates and sends to the input of the beacon 5 a command to switch to the confirmation mode of theft. From this moment, the vehicle serviced by the system is considered as a TCB.

Beacon 5, having switched to the specified mode, starts sending short-term transmissions on the air containing encoded alarm messages about theft of the vehicle. These parcels are received by subscriber receivers 11 of relay blocks 10 (FIG. 5) of subscriber complexes 1 located in the coverage area of beacon 5. After the selection of the indicated alarm messages about theft of the vehicle in the subscriber receiver 11, these alarm messages are sent to the first input of the microcontroller 12 and recorded in it buffer memory. Having recorded the indicated alarm message about theft of the vehicle, the microcontroller 12 of the relay unit 10 sends, through the switching unit 8, a request to the satellite navigation unit 13 to issue the current coordinate values of the given subscriber complex 1. From the satellite navigation block 13, the coordinate codes of the subscriber complex 1 that received the alarm signals the beacon 5 are transmitted through the switching unit 8 to the microcontroller 12, where a single code message is generated containing, respectively, the codes of the identification signs of the given subscriber computer Lex 1, which received the alarm signals of the beacon 5, and codes of its coordinates. Through the switching unit 8, this single code message is fed to the input of the mobile cellular subscriber terminal 9, which performs the standard operations necessary for transmitting this code message over the cellular mobile network.

Reception, processing and display of the specified alarm code message in the dispatch center 3 are carried out in the same way as in the above initial notification mode. The only difference is that the digital processing of the (secondary) signals takes into account the movement of the TCB.

To account for the movement of the TCB, well-known auto-tracking algorithms are used (for example, "The Guide to Radar" edited by M. Skolnik, Moscow: Sovetskoe Radio, 1978, chapter 1). The system can simultaneously accompany several TCBs. Maintenance is carried out under visual control of the operator of the dispatch center 3, which can manually change the tracking parameters (data update period, path smoothing coefficients, and other parameters). The TCM movement is displayed on the monitor screen of the operator's 16 automated workstation in the form of a trajectory of the conditional TCB mark against the background of the corresponding fragment of the terrain map. As a rule, TCB moves along a road network. The presence before the eyes of the operator of the dispatch center of 3 fragments of the map-scheme of the road network significantly facilitates its work, increases the stability of maintenance and gives the operator of the dispatch center 3 a certain margin of time and confidence for making decisions.

The coordinates of the TCB are determined on board by solving the navigation equations in block 13 of the satellite navigation (according to the GPS receiver). In the dispatch center 3, the location area of the TCB (microcell of the GPS receiver) is displayed as a circle with a radius determined by the error of the GPS receiver. When the TCB moves along the road, the location of this circle on the map shifts, in accordance with the GPS receiver, and the dimensions of the intersection of the specified circle with the road determine the estimate of the value of the plane measurement errors. The solutions of the navigation equations in the satellite navigation unit 13 are made with the frequency of obtaining satellite radio navigation data, as a rule, twice a second.

If the GPS receiver, which is part of the satellite navigation unit 13, is neutralized by intruders using interference, then the location of the TCB is determined by the navigation data transmitted by its neighboring subscriber complexes 1, as the intersection area of the corresponding microcells. The accuracy of such location of the TCB position is low, however, it is quite sufficient for the initial target designation of response vehicle crews.

Important information for increasing the accuracy of determining the initial location of the TCB and its further sustainable tracking is provided by the use in block 15 of digital signal processing of a digital model of a road network in the form of a set of linear segments and nodes. Only the combination of navigation data and the digital model of the road network allows for reliable, stable tracking of moving TCBs.

However, it is much more convenient (and safer) to search for and intercept the TCB when it is stationary. For this, in the security and anti-theft subsystem 4 of the subscriber complex 1 TCB, as well as in the closest analogue, a channel for remote influence on the executive bodies 20 is provided in order to block the movement of the TCB.

To force stop the TCB, the operator of the dispatch center 3 dials the appropriate command on the remote control of the operator’s workstation 16 and sends it to the air via the central terminal 14 of the mobile cellular communication, for example, in the form of an SMS message. In this case, both the address number of the subscriber terminal 9 of the mobile mobile communication that sent the alarm message and the numbers of the subscriber terminals 9 of the mobile mobile communication relaying this alarm message are indicated. Accordingly, the command to block the movement of the TCB can arrive on board the serviced TCB in two ways - directly and through subscriber complexes 1, which act as repeaters.

In the absence of interference, both of these channels operate. When interference is suppressed by the direct GSM channel, only noise-protected redundant relay channels remain available. The vehicle traffic blocking command is received by the mobile subscriber terminal 9 of the neighboring vehicle, not suppressed by interference, and through the switching unit 8 is supplied to its central control unit 6. In accordance with the address contained in the indicated command, the central control unit 6 generates a command, which is fed to the activation input of the beacon 5, using an interference-protected signal with jumping carrier frequencies. Beacon 5 sends this signal to the air. The specified signal is received by the subscriber receiver 11 of the relay unit 10 of the vehicle to which the specified command is addressed. From the subscriber receiver 11, the specified command through the switching unit 8 enters the central control unit 6, which generates the corresponding command to the executive bodies 20. Thus, in any interference situation, the operator of the dispatch center 3 is able to remotely block the movement of the TCB if necessary.

By switching the system under consideration to the mode of tracking the TCB, or by forcibly stopping the TCB, the operator of the dispatch center 3 proceeds to the final phase of the operation — to search for and intercept the TCB using the response forces. To do this, he selects a specific outfit of response forces equipped with response complexes 2 and gives them the initial target designation, namely, indicates on the map-scheme the zone of the probable location of the TCB. The coordination of further advancement to the zone of probable location of the TCB of the response forces, for example, several response vehicles equipped with response complexes 2, is carried out by exchanging information over the response vehicle crews with each other and with the operator of the dispatch center 3 over the cellular mobile network.

After the response vehicle enters the zone of probable location of the TCB, the final phase of the operation begins, in which reaction complexes 2 play the main role.

In the embodiment of the response complex 2 shown in FIG. 4, it comprises series-connected object mobile terminal 21, a data format matching unit 22 and a personal navigator 23, the output of which is connected to the input of the cellular mobile communication object 21. DF direction finding is carried out by tracker 24, configured to exchange data with a personal navigator 23. Information can be displayed both on the screen of a personal navigator 23 and on the screen of a tracker 24.

The command transmitted through the cellular mobile communication network from the dispatch center 3 containing the target designation of the response vehicle is received by its object mobile cellular communication terminal 21. After the conversion (conversion) in the data format approval block 22, the indicated target designation is transmitted to the personal navigator 23, with the help of which the response vehicle crew coordinates its movement towards the target.

After the response vehicle enters the area of probable location of the target, the operator of the response complex 2, using the transmitter of tracker 24, sends the beacon activation command 5 to the TCB.

This command is received by the beacon 5, and the beacon 5 switches to the mode of providing direction finding of the vehicle with the response complexes 2. The specified mode is characterized by a higher radiation power of the beacon 5 and a significantly lower duty cycle than in the mode of confirmation of the theft.

An increase in the average radiation power of the beacon 5 makes it possible to locate the beacon 5 with fairly high accuracy using the tracker 24, which is part of the response complex 2, and determine the distance to it. High noise immunity of the indicated direction-finding channel is achieved by using in it, as in the backup relay channels, signals with a hopping carrier frequency, for example, hopping signals.

The hopping signal emitted by the beacon 5 is received by the tracker 24, comprising a hopping signal receiver configured to select message category information, identification marks of the TCB, and GPS receiver data included in the satellite navigation unit 13 in the code packets. The code parcels that passed this selection are converted in the tracker 24 to the format used by the personal navigator 23. It is the use of the hopping signal that provides the system immunity when intruders use deliberate interference that suppresses the transmission of messages over a cellular mobile network.

If the interference is not applied and the cellular mobile network provides SMS messages with the coordinate code of the current location of the TCB, then the hopping signal channel is used by the personal navigator 23 as an additional source of information to determine the relative location of the TCB and the response vehicle. In the case of transmitting the code of the current location of the TCB over the cellular mobile communication network (as an SMS message), it is received by the object mobile terminal 21 of the response complex 2 and transmitted to the data format approval unit 22, where it is converted into one of the formats used by the personal navigator 23 .

At the same time, the personal navigator 23 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 response vehicle and, then, the relative coordinates of the vehicle (the angle of the direction of movement to the vehicle and the remaining distance between the response vehicle and the vehicle).

A feature of the personal navigator 23 is its ease of use — to provide movement by the shortest path to a given point. In an operation to intercept the TCB, such a given point is the point of the current location of the TCB.

A personal navigator 23, for example, the aforementioned GPS-38, uses to indicate and control the direction of movement of angular degrees, measured (like in a magnetic compass) clockwise from the north direction (N). 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 the GPS-38, needs to “watch” at least three GPS satellites simultaneously for some time.

To determine the speed of the GPS-38 response vehicle, it is required to "observe" at least four GPS satellites simultaneously. The GPS-38 has special inputs for connecting external devices that provide coordinate information. In the considered response complex 2, the data format matching unit 22 and tracker 24 are connected to these inputs. a mobile mobile subscriber terminal 9 (for example, by means of an SMS message in a cellular mobile network). The external coordinate information can also be a bearing on the TCB and the distance to it, measured using tracker 24.

Thus, even in the most adverse interference environment - when intentionally interfering with cellular mobile networks and the equipment of satellite navigation systems - the system maintains operability and provides high accuracy characteristics. In these cases, the interception of the TCB is carried out using a noise-resistant direction finding channel formed by tracker 24 and a beacon 5.

One of the standard GPS-38 operating modes is very useful for speeding up the operation of intercepting the TCB - the mode of providing movement to the target in the shortest way using the "Direct Path" screen page. Using this page provides control of deviation parameters from a predefined direct path to the target (i.e., to the TCB). 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. To maintain the correct course, the operator of the response complex 2 must constantly combine the indicated arrow with the pointer on the graphical indicator scale. 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 is achieved, that is, the TCB is somewhere nearby - in the area of visual contact. The use of GPS-38 does not require any professional skills from the complex 2 response operator, therefore this device is available to any member of the response vehicle crew.

Thus, the proposed technical solution allows us to solve the problem - to create a system for detecting and intercepting a telephone exchange, providing covert transmission of alarm signals from the aircraft and preserving operability in any situation even in the most adverse interference, when the channels of a cellular mobile network are suppressed using deliberate interference and global satellite navigation system.

The technical result provided consists in the use of noise-resistant redundant alarm relay channels using the subscriber complexes 1 of the neighboring ones serviced by the TS system, and in providing flexible control of the duration, duty cycle and power of the alarm signal at various stages of detection and interception of TCB.

Claims (7)

1. Satellite security and search system, containing connected to each other via a cellular mobile network, such as GSM networks, subscriber vehicle complexes (TS), response systems and a dispatch center, with each subscriber complex containing a security and anti-theft subsystem with a central a control unit connected to the ignition unit, as well as a radio beacon covertly mounted on the vehicle, the activation input of which is connected to the first output of the central control unit, the cellular subscriber terminal mobile communication associated with the switching unit configured to exchange signals with the central control unit of the anti-theft alarm subsystem and the satellite navigation unit, for example, a GPS receiver connected to the switching unit, each response complex contains an object mobile cellular communication terminal, and a control center contains a central mobile cellular communication terminal, the input of which is connected to the operator’s workstation, characterized in that the composition of each subscriber complex includes a relay unit configured to receive signals from radio beacons of subscriber complexes of other vehicles serviced by the system and connected to the corresponding output and input of the switching unit, while each of the beacons is configured to provide radiation modes covering the initial notification of an attempt to unauthorized use of a serviced vehicle, confirmation of the fact car theft and direction finding by response complexes. 2. The system according to claim 1, characterized in that the relay unit of each subscriber complex contains a subscriber receiver configured to receive signals from the radio beacons of the subscriber complexes of other TS serviced by the system, and a microcontroller, the first input and output of which are the input and output of the relay unit, and the second input is connected to the output of the subscriber receiver. 3. The system according to claim 1, characterized in that a data format matching unit and a personal navigator are arranged in each response complex, capable of receiving, processing and displaying signals of a satellite navigation system, for example, GPS, the output of which is via a mobile cellular object terminal the connection is connected to the input of the data format matching unit, as well as a tracker associated with a personal navigator and configured to detect radio beacons of subscriber complexes served vehicle system and measuring distances to them. 4. The system according to claim 1, characterized in that a digital signal processing unit is introduced into the control center, the input of which is connected to the output of the central mobile cellular communication terminal, and the output is connected to the operator’s workstation. 5. The system according to claim 1, characterized in that the security and anti-theft subsystem, in addition to the central control unit, includes sensors made with the possibility of determining the state of the serviced vehicle and connected by outputs to the information inputs of the central control unit, as well as executive bodies made with the possibility of influencing the serviced vehicle and the inputs connected to the control outputs of the central control unit, the label and the identification unit associated with it over the air. 6. The system according to claim 2, characterized in that the beacon of the subscriber complex of each of the vehicles serviced by the system is configured to emit signals with a randomly varying carrier frequency, for example, hop signals, and the subscriber receiver of the relay unit is capable of receiving and processing said signals. 7. The system according to claim 3, characterized in that the response complex tracker is configured to emit, receive and process signals with a randomly varying carrier frequency, for example, hopping signals.

Images