CN101986169A - Distributed passive detection system based on cellular mobile communication base station and network thereof - Google Patents
Distributed passive detection system based on cellular mobile communication base station and network thereof Download PDFInfo
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Abstract
The invention provides a distributed passive detection system based on a cellular mobile communication base station and a network thereof. The system comprises an intercept receiving unit, a communication link and a master control center, wherein the intercept receiving unit comprises an antenna unit, a radio frequency signal processing unit, a baseband signal processing unit, a synchronous time service unit and a communication service unit; and the master control unit comprises a communication service unit, a data fusion unit, a target positioning/tracking unit, a target identifying unit, an integrated display control unit, a binary search decision unit and an intercept receiving equipment managing unit. The distributed passive detection system based on the cellular mobile communication base station and the network thereof provided by the invention is easy for wide arrangement, and has wide coverage range and good destruction resistance and elusive.
Description
Technical field
The present invention relates to the passive detection field, particularly a kind of distributed Passive Detention System based on cellular mobile communication base station and network thereof.
Background technology
In the complicated day by day modern high technology war of electronic interferences, " four is anti-" (anti-interference, shoulder low-level penetration, anti-antiradiation missile and the anti-stealthy) ability that how further to improve radar is the important goal of development New System radar.
Passive radar receives the information of carrying from the reflection wave that forms after the direct wave in target emanation source and the foreign radiation sources irradiation target or scattering wave (comprising the mistiming of Doppler shift, multistation received signal and the angle of arrival etc.) by antenna, after information processing, finish the location and the tracking of target, himself does not launch any radiation, so the low probability of intercept characteristic is arranged, in modern electronic warfare, local stealth aircraft, antiradiation missile is had stronger advantage and viability.Owing to do not have energy to cover and the clutter problem, do not have detection blind area in theory.These all make passive detection equipment have geneogenous comprehensive " four is anti-" ability.
As shown in Figure 1, a kind of passive radar detecting strategy that current traditional detection mode provides, detect by several and to receive the station and be arranged in zone of protection temporarily and constitute, each is detectd, and receiving stands is undertaken interconnected by interim wired or wireless communication mode, so this mode is difficult for extensive the layout, zone of protection is limited, and is limited to the detection tracking power of target, and can't realize unmanned.
Summary of the invention
The invention provides a kind of distributed Passive Detention System scheme, be easy to arrange to provide a kind of, wide coverage, maintenance cost is low, detection reliability is high, the manpower use cost is low Passive Detention System scheme based on cellular mobile communication base station and network thereof.
To achieve these goals, technical scheme of the present invention is:
A kind of distributed Passive Detention System based on cellular mobile communication base station and network thereof, it is characterized in that, comprise detecing and receive unit, communication link and main control centre, wherein, the described receipts unit of detecing comprises: antenna element, radiofrequency signal processing unit, baseband signal processing unit, synchronous time service unit and communication service unit; Described main control centre comprises: communication service unit, data fusion unit, target localization/tracking cell, Target Recognition unit, synthesis display control module, binary search decision package and detect the receiving unit administrative unit;
Described antenna element, mainly receiving the elevation angle is the signal of the above direction of 30 degree;
Described radiofrequency signal processing unit links with described antenna element, is used for the detection signal that the receiving antenna unit receives, and described detection signal is generated the zero intermediate frequency base band data, and sends base band data to described baseband signal processing unit;
Described synchronous time service unit links with the base signal processing unit, is used to receive the BD/GPS/GLONASS satellite-signal, and to described base signal processing unit transmission time information and PPS signal;
Described baseband signal processing unit, with radiofrequency signal unit and synchronous time service cell link, be used for the base band data of received RF unit transmission and the temporal information and the PPS of synchronous time service unit, give temporal information according to PPS to base band data, and described base band data is carried out direct signal and multipath signal suppress, carry out information extractions such as target echo TOA, FOA, DOA, AOA at last;
Wherein, this is detectd and receives the unit and also comprise: RS-232 interface, USB interface and Ethernet interface are used to finish described transmission of Information.
Wherein, this is detectd the receipts unit and also comprises: the modulus processing unit, be arranged in the described radiofrequency signal processing unit, and the signal that is used for described antenna is received carries out analog to digital conversion.
Wherein, this is detectd the receipts unit and also comprises: DDR RAM interface, be used to connect DDR RAM and baseband signal processing unit and be used to be connected DDR RAM and communication service unit, the former is used for the metadata cache of described baseband processing unit is saved in DDR RAM to DDR RAM with the volatile data of described baseband processing unit, and the Master Control Center information cache that the latter is used for described communication service unit is received is to DDRRAM.
Wherein, this is detectd the receipts unit and also comprises: FLASH ROM interface, be used to connect FLASH ROM and baseband processing unit and be used to be connected FLASH ROM and communication service unit, the former is used for the Nonvolatile data of described baseband processing unit is saved in FLASH ROM, and the latter is used for the Nonvolatile data of described communication service unit is saved in FLASH ROM.
Wherein, also be provided with on the described baseband processing unit: jtag interface, LED interface, 3uMAC/PHY interface, PROM configuration interface and hardware user DIP translation interface.
Described this detectd the receipts element characteristic and also comprised: be arranged near the cellular communication base stations or and set up at the station altogether, use described antenna element to detect and receive the overhead target echo of cellular unit with the cellular mobile communication base station, and by base station E1 interface access core net.
Described communication service unit is used to detect and receives communicating by letter of unit and main control centre, finishes the following biography with main control centre information of reporting of detecing receipts unit measurement data;
Described communication link inserts the E1 interface by the mobile communication base station controller, and the described physical link link of receiving unit and described main control centre of detecing is provided, and realizes detecing and receives the interconnected of unit and Master Control Center, is used for information transmission;
More described data fusion unit is used to finish detect and receives screening, the optimum combination that data are uploaded at the station, and the data after the target localization unit transmits the screening combination;
Described target localization/tracking cell receives the data fusion cell data, and finish the target location and resolve, target following, and, simultaneously target position information is delivered to the Target Recognition unit to flight path display unit transmission target position information;
Described Target Recognition unit is used to finish Target Recognition, and sends the target classification information to row flight path display unit;
Described synthesis display control module, the target classification information of the target position information of receiving target location/tracking cell and Target Recognition unit, and the flight path of finishing target shows.
Described binary search decision package receives the target information of location/tracking cell and the command information of synthesis display control module, and making a strategic decision and finishing binary search information issues.
The described receiving unit administrative unit of detecing receives and respectively detects the equipment condition information of receiving the unit, and finishes each and detect the control and the management of receiving the unit.
A kind of method of base band signal process is applied in the baseband processing unit, and described baseband processing unit comprises: direct signal suppresses unit, two-dimensional correlation processing unit, target echo information extraction unit; The method comprising the steps of:
Direct signal suppress the unit according to detect collect mail number in the tetanic signal that reaches carry out the through signal suppressing of self-adaptation, and send base band data after suppressing direct signal to the two-dimensional correlation processing unit;
The base band data of two-dimensional correlation processing unit after according to described inhibition direct signal carries out the time-frequency two-dimensional cross-correlation calculation, and result of calculation is sent to the target echo information extraction unit;
The target echo information extraction unit is extracted target information according to described result of calculation.
The method of a kind of location/tracking is applied in target localization/tracking cell, and described target localization/tracking cell comprises: single station AOA/TOA positioning unit, multistation AOA/TDOA positioning unit; The method comprising the steps of:
Location/tracking cell receives the measurement data that the data fusion unit is sent here, if measurement data is only received the unit then started single station AOA/TOA positioning unit from same detecing, receive the unit then start multistation AOA/TDOA positioning unit if measurement data comprises from a plurality of detecing.
A kind of method of binary search is applied in main control centre and each detects the receipts unit, and the method comprising the steps of:
Detect and receive the possible target information of unit extraction, upload Master Control Center;
Master Control Center merges a plurality of above-mentioned target informations of uploading the receipts unit of detecing, as satisfy the target localization condition, information such as calculated target positions, speed then, and detect to all that may observe this target and to receive the unit and issue binary search information, information comprises information such as the current position of target, speed; Determine condition as discontented foot-eye, then authenticity, the significance level of target to be determined are assessed according to above-mentioned information, make the binary search information that whether issues according to assessment result, as need then binary search information comprise the zone, target location of estimation, the information such as target velocity scope of estimation;
Detect and receive the unit according to Master Control Center binary search information, the zone may appear in the focussing search target.
From technique scheme as can be seen, distributed Passive Detention System based on cellular mobile communication base station and network thereof provided by the invention, receive unit receiving target information by being distributed in respectively detecing of cellular mobile communication base station, utilize mobile communication core network transmission detection information, receive the unit and upload information and settle accounts respectively detecing at Master Control Center at last, finish target localization, target following, Target Recognition, so this detection system is a kind of based on cellular mobile communication base station, distributed Passive Detention System; Native system make full use of existing civilian installation have arrange easily, the overlay area is wide, maintenance cost is low, detect receiving unit can realize advantages such as unmanned, human cost are low.
Description of drawings
The passive detection embodiment synoptic diagram that Fig. 1 provides for the traditional passive detection mode;
The passive detection embodiment synoptic diagram that Fig. 2 provides for the embodiment of the invention;
The structure principle chart of detecing the receipts unit that Fig. 3 provides for the embodiment of the invention;
The logical organization schematic diagram of the Master Control Center that Fig. 4 provides for the embodiment of the invention;
The process flow diagram of the base band signal process that Fig. 5 provides for the embodiment of the invention;
The process flow diagram of location/tracking that Fig. 6 provides for the embodiment of the invention;
The process flow diagram of the binary search that Fig. 7 provides for the embodiment of the invention.
Embodiment
Technical scheme is for a better understanding of the present invention described embodiment provided by the invention in detail below in conjunction with accompanying drawing.
The embodiment of the invention provides a kind of distributed Passive Detention System based on cellular mobile communication base station and network thereof, is used for passive detection.This detection system adopts and detects receiving unit distributed arrangement and detection more, and Master Control Center is concentrated the mode of settling accounts, locating and follow the tracks of.The structure of " distributed " can make the whole search coverage of the seamless covering of detection system to greatest extent.The mode of " settle accounts at the center " can be collected the detection information of detecing receiving unit that is distributed in each zone to greatest extent.
One of its core content is that Master Control Center and the system of detecing the receiving unit distributed arrangement form mode.Respectively detecing receiving unit finishes the signal of region and detects receipts, target detection.
As Fig. 2, this distributed Passive Detention System comprises and somely detects receiving unit 200 and Master Control Center 201 with what set up the base station.Wherein, as shown in Figure 3, the described receipts unit main 200 of detecing comprises: antenna element 300, radiofrequency signal processing unit 301, GPS/GLONASS/BD2 receiving antenna 302, synchronous time service unit 303, baseband signal processing unit 304, communication service unit 305 etc.; Wherein, as shown in Figure 4, described Master Control Center 201 comprises: communication service unit 401, data fusion unit 402, location/tracking cell 403, Target Recognition unit 404, synthesis display control module 405, binary search decision package 406 and detect receiving unit administrative unit 407.
Radiofrequency signal processing unit 301 receives the CDMA signal that receives from antenna element 300, simultaneously these signal frequency conversions to intermediate frequency, again intermediate-freuqncy signal is carried out analog to digital conversion, digital signal after the analog to digital conversion is converted to base band through DDC, at last described baseband signal is sent to baseband signal processing unit 304; Time service unit 303 receives the GPS/GLONASS/BD2 satellite-signal that receives from GPS/GLONASS/BD2 receiving antenna 302 synchronously, carries out PVT according to described satellite-signal and resolves, and simultaneously pulse per second (PPS) PPS and temporal information is sent to baseband signal processing unit 304; Baseband signal processing unit 304 receives described baseband signal, PPS and temporal information, after treatment detectable signal is sent to communication service unit 305.
In detecing the receipts further embodiment in unit, this many this is detectd the receipts unit and is also comprised: DDR RAM (Double Data Rate internal memory) interface 308, be used to connect DDR RAM and described baseband signal processing unit 304, be used for the metadata cache of described baseband signal processing unit 304 is saved in DDR RAM to DDR RAM with the volatile data of described baseband signal processing unit 304.
In detecing the receipts further embodiment in unit, this is detectd the receipts unit and also comprises: FLASHROM (flash memory) interface 307, be used to connect FLASH ROM and baseband signal processing unit 304, be used for the Nonvolatile data of described baseband signal processing unit 304 is saved in FLASH ROM.Be used to write the firmware code of corresponding baseband signal processing unit 304, prevent loss of data.
Advance to detect to receive among the unit embodiment in one step, also be provided with on the described baseband signal processing unit 304: JTAG (joint test working group) interface 306, LED (light emitting diode) interface, PROM (programmable memory) configuration interface and hardware user DIP (dual-in-line package) translation interface.Jtag interface is realized hardware debug and convenient scanning configuration.The PROM configuration interface is realized the non-volatile configuration of program.Also be provided with the LED interface on this baseband signal processing unit 304, indicate the state of each hardware.
Advance to detect to receive among the unit embodiment in one step, time service unit 303 is also to radiofrequency signal processing unit 301 output 10MHz clocks, to realize radiofrequency signal processing unit 301 clock locks synchronously.
The invention process also provides a kind of signal processing method, is applied in the baseband signal processing unit 304, and described baseband processing unit comprises: direct signal suppresses unit, time-frequency two-dimensional relevant treatment unit, target echo information extraction unit; As shown in Figure 5, the method comprising the steps of:
Described direct signal suppress unit 501 according to detect collect mail number in the tetanic signal that reaches carry out the through signal suppressing of self-adaptation, and send base band data after suppressing direct signal to time-frequency two-dimensional relevant treatment unit;
Described time-frequency two-dimensional relevant treatment unit 502 carries out the mutual Fuzzy Calculation of time-frequency two-dimensional according to the base band data behind the described inhibition direct signal, and result of calculation is sent to the target echo information extraction unit;
Described target echo information extraction unit 503 is extracted target information according to described result of calculation.
The invention process also provides the method for a kind of location/tracking to be applied in target localization/tracking cell, and described target localization/tracking cell comprises: single station AOA/TOA positioning unit, multistation AOA/TDOA positioning unit; As described in Figure 6, the method comprising the steps of:
601: location/tracking cell receives the measurement data that the data fusion unit is sent here.
602: only then start single station AOA/TOA positioning unit as if measurement data, then start multistation AOA/TDOA positioning unit if measurement data comprises from a plurality of receipts unit of detecing from the same receipts unit of detecing.
The invention process also provides a kind of method of binary search to be applied in main control centre and each detects the receipts unit, and as shown in Figure 7, the method comprising the steps of:
701: detect and receive the possible target information of unit extraction, upload Master Control Center;
702: Master Control Center merges a plurality of above-mentioned target informations of uploading the receipts unit of detecing, as satisfy the target localization condition, information such as calculated target positions, speed then, and detect to all that may observe this target and to receive the unit and issue binary search information, information comprises information such as the current position of target, speed; Determine condition as discontented foot-eye, then authenticity, the significance level of target to be determined are assessed according to above-mentioned information, make the binary search information that whether issues according to assessment result, as need then binary search information comprise the zone, target location of estimation, the information such as target velocity scope of estimation;
703: detect and receive the unit according to Master Control Center binary search information, the zone may appear in the focussing search target.
More than a kind of Passive Detention System based on cellular mobile communication base station and network thereof that the embodiment of the invention provided is described in detail, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. distributed Passive Detention System based on cellular mobile communication base station and network thereof, it is characterized in that, comprise detecing and receive unit, communication link and main control centre, wherein, the described receipts unit of detecing comprises: antenna element, radiofrequency signal processing unit, baseband signal processing unit, synchronous time service unit and communication service unit; Described main control centre comprises: communication service unit, data fusion unit, target localization/tracking cell, Target Recognition unit, synthesis display control module, binary search decision package and detect the receiving unit administrative unit;
Described antenna element, mainly receiving the elevation angle is the signal of the above direction of 30 degree;
Described radiofrequency signal processing unit links with described antenna element, is used for the detection signal that the receiving antenna unit receives, and described detection signal is generated the zero intermediate frequency base band data, and sends base band data to described baseband signal processing unit;
Described baseband signal processing unit, with radiofrequency signal unit and synchronous time service cell link, be used for the base band data of received RF unit transmission and the temporal information and the PPS of synchronous time service unit, give temporal information according to PPS to base band data, described base band data is carried out direct signal and multipath signal inhibition, and carry out information extractions such as target echo TOA, FOA, DOA, AOA;
Described communication service unit is used to detect and receives communicating by letter of unit and main control centre, finishes the following biography with main control centre information of reporting of detecing receipts unit measurement data;
Described communication link inserts the E1 interface by the mobile communication base station controller, and the described physical link link of receiving unit and described main control centre of detecing is provided, and realizes detecing and receives the interconnected of unit and Master Control Center, is used for information transmission;
More described data fusion unit is used to finish detect and receives screening, the optimum combination that data are uploaded at the station, and the data after the target localization unit transmits the screening combination;
Described target localization/tracking cell receives the data fusion cell data, and finish the target location and resolve, target following, and, simultaneously target position information is delivered to the Target Recognition unit to flight path display unit transmission target position information;
Described Target Recognition unit is used to finish Target Recognition, and parallel flight path display unit sends the target classification information;
Described synthesis display control module, the target classification information of the target position information of receiving target location/tracking cell and Target Recognition unit, and the flight path of finishing target shows.
Described binary search decision package receives the target information of location/tracking cell and the command information of synthesis display control module, and making a strategic decision and finishing binary search information issues.
The described receiving unit administrative unit of detecing receives and respectively detects the equipment condition information of receiving the unit, and finishes each and detect the control and the management of receiving the unit.
2. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, the described receipts arrangements of cells of detecing is set up at the station near cellular communication base stations or with the cellular mobile communication base station altogether, use described antenna element to detect and receive the overhead target echo of cellular unit, and insert core net by base station E1 interface.
3. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, the described receipts unit of detecing also comprises: RS-232 interface, USB interface and Ethernet interface are used to finish described transmission of Information.
4. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, the described receipts unit of detecing also comprises: the modulus processing unit, be arranged in the described radiofrequency signal processing unit, be used for the signal that described adaptive beam formation antenna receives is carried out analog to digital conversion.
5. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, the described receipts unit of detecing also comprises: DDR RAM interface, be used to connect DDR RAM and baseband signal processing unit and be used to be connected DDR RAM and communication service unit, the former is used for the metadata cache of described baseband processing unit is saved in DDR RAM to DDR RAM with the volatile data of described baseband processing unit, and the Master Control Center information cache that the latter is used for described communication service unit is received is to DDR RAM.
6. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, the described receipts unit of detecing also comprises: FLASH ROM interface, be used to connect FLASH ROM and baseband processing unit and be used to be connected FLASH ROM and communication service unit, the former is used for the Nonvolatile data of described baseband processing unit is saved in FLASH ROM, and the latter is used for the Nonvolatile data of described communication service unit is saved in FLASH ROM.
7. a kind of distributed Passive Detention System as claimed in claim 1 based on cellular mobile communication base station and network thereof, it is characterized in that, also be provided with on the described baseband processing unit: jtag interface, LED interface, 3u MAC/PHY interface, PROM configuration interface and hardware user DIP translation interface.
8. the method for a base band signal process is characterized in that, is applied in the baseband processing unit, and described baseband processing unit comprises: direct signal suppresses unit, time-frequency two-dimensional relevant treatment unit, target echo information extraction unit; The method comprising the steps of:
Direct signal suppress the unit according to detect collect mail number in the tetanic signal that reaches carry out the through signal suppressing of self-adaptation, and send base band data after suppressing direct signal to time-frequency two-dimensional relevant treatment unit;
The base band data of time-frequency two-dimensional relevant treatment unit after according to described inhibition direct signal carries out the mutual Fuzzy Calculation of time-frequency two-dimensional, and result of calculation is sent to the target echo information extraction unit;
The target echo information extraction unit is extracted target information according to described result of calculation.
9. the method for a location/tracking is characterized in that, is applied in target localization/tracking cell, and described target localization/tracking cell comprises: single station AOA/TOA positioning unit, multistation AOA/TDOA positioning unit; The method comprising the steps of:
Location/tracking cell receives the measurement data that the data fusion unit is sent here, if measurement data is only received the unit then started single station AOA/TOA positioning unit from same detecing, receive the unit then start multistation AOA/TDOA positioning unit if measurement data comprises from a plurality of detecing.
10. the method for a binary search is characterized in that, is applied in main control centre and each detects the receipts unit, and the method comprising the steps of:
Detect and receive the possible target information of unit extraction, upload Master Control Center;
Master Control Center merges a plurality of above-mentioned target informations of uploading the receipts unit of detecing, as satisfy the target localization condition, information such as calculated target positions, speed then, and detect to all that may observe this target and to receive the unit and issue binary search information, information comprises information such as the current position of target, speed; Determine condition as discontented foot-eye, then authenticity, the significance level of target to be determined are assessed according to above-mentioned information, make the binary search information that whether issues according to assessment result, as need then binary search information comprise the zone, target location of estimation, the information such as target velocity scope of estimation;
Detect and receive the unit according to Master Control Center binary search information, the zone may appear in the focussing search target.
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