CN209296915U - Passive Radar System based on target positioning - Google Patents
Passive Radar System based on target positioning Download PDFInfo
- Publication number
- CN209296915U CN209296915U CN201821480319.9U CN201821480319U CN209296915U CN 209296915 U CN209296915 U CN 209296915U CN 201821480319 U CN201821480319 U CN 201821480319U CN 209296915 U CN209296915 U CN 209296915U
- Authority
- CN
- China
- Prior art keywords
- signal
- reference signal
- receiving
- detectable
- radio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The utility model discloses a kind of Passive Radar Systems based on target positioning.The system includes transmitting station and receiving station；Transmitting station carries out preset signals processing to the radio signal that target satellite is sent, and obtains the second reference signal, and the second reference signal of broadcast transmission；The radio signal that receiving station sends target satellite carries out preset signals processing, obtains the first reference signal, is the identical signal of frequency spectrum with the second reference signal, and the signal acquisition time of the first reference signal and the signal acquisition time of the second reference signal are identical；Object to be measured is received at least one detectable signal after the reflection of the second reference signal.Radar monitoring center is based on the first reference signal and at least one detectable signal, obtains positioning using TDOA information.As it can be seen that the system limits the reception of reference signal without the concern for earth curvature.
Description
Technical field
The utility model relates to passive radar technical field more particularly to a kind of passive radar systems based on target positioning
System.
Background technique
Currently, in the Air Defense Ground Environment System for being main detection system with monostatic radar, it is comprehensive to improve monostatic radar
Close antagonism, the various new technologies of promotion and application, such as ultra low sidelobe antenna, digital beam froming, self-adaptive processing, target
Identification and imaging etc..At the same time, people are also in the passive radar for making great efforts development non-radiating electromagnetic signal.Due to passive radar system
Uniting, relatively simple, cost is relatively low, and not outside electromagnetic radiation signal, is not easy to be detected by enemy's reconnaissance system, therefore, nothing
Source radar system improves the detection means important with one kind is developed into.
As shown in Figure 1, traditional Passive Radar System includes transmitting station and receiving station, transmitting station can be broadcasting station,
TV station or called station.Receiving station may include receiving unit A and receiving unit B.Transmitting station's broadcast issues reference signal, receives
Unit A receives the detectable signal of target aircraft reflection by antenna, and receiving unit B directly receives the reference letter of emission source sending
Number.Radar monitoring center carries out relevant treatment using the detectable signal of the reference signal and target aircraft reflection, when generating target
Poor location information, and the information is sent into radar monitoring center, realize the locating and tracking to aerial target.
However, it is found by the inventors that above-mentioned Passive Radar System must obtain the reference letter of transmitting station's sending in normal work
Number, but limited by earth curvature, receiving station must not be too far away far from the distance of transmitting station, general no more than 100 kilometers.If away from
Too far away, the signal strength of the received reference signal of receiving station can die down, and influence the accuracy positioned to aerial target.
Utility model content
The utility model provides a kind of Passive Radar System and object localization method based on target positioning, for solving
Receiving station receives the problem of reference signal is limited by earth curvature in the prior art, improves to the accurate of aerial target locating and tracking
Property.
In a first aspect, providing a kind of Passive Radar System based on target positioning, which includes: transmitting station, receives
It stands and radar monitoring center；
Transmitting station, for receiving the radio signal of target satellite transmission；Preset signals processing is carried out to radio signal,
Obtain the second reference signal；The second reference signal of broadcast transmission；
Receiving station, for receiving the radio signal of target satellite transmission；Preset signals processing is carried out to radio signal,
Obtain the first reference signal, the first reference signal and the second reference signal are the identical signal of frequency spectrum, the letter of the first reference signal
Number acquisition time is identical as the signal acquisition time of the second reference signal；Receive at least one detection letter of object to be measured reflection
Number, detectable signal is the signal after object to be measured reflects the second reference signal；
Radar monitoring center, for based on the first reference signal and at least one detectable signal, obtain object to be measured when
Poor location information.
In an optional realization, transmitting station includes that the first receiving device and the transmission being connected with the first receiving device are set
Standby, each receiving station includes first receiving device and at least one second receiving device；
First receiving device of transmitting station, for receiving the radio signal of target satellite transmission；To radio signal into
The processing of row preset signals, obtains the second reference signal；
Sending device is used for the second reference signal of broadcast transmission；
First receiving device of receiving station, for receiving the radio signal of target satellite transmission；To radio signal into
The processing of row preset signals, obtains the first reference signal；
Second receiving device, for receiving the detectable signal of object to be measured reflection.
In an optional realization, the first receiving device includes: satellite reception unit, GPS clock unit, synchronous adaptation
Unit and modulation unit；
Satellite reception unit, for receiving the radio signal of target satellite transmission；
GPS clock unit controls signal for exporting preset synchronised clock to synchronous adaptation unit；
Synchronous adaptation unit, for obtaining synchronization signal based on preset synchronised clock control signal and radio signal；
Modulation unit, for carrying out signal modulation to synchronization signal, obtaining reference signal using default modulation scheme.
In an optional realization, which further includes storage equipment；
Equipment is stored, the signal acquisition time and the signal of at least one detectable signal for record the first reference signal connect
Between time receiving.
In an optional realization, radar monitoring center is specifically used for the first reference signal and at least one detection
Signal carries out relevant detection, obtains testing result, and testing result includes and matched second reference signal pair of the first reference signal
The detectable signal answered；
Based on testing result, signal acquisition time and signal reception time, the positioning using TDOA information of object to be measured is obtained.
In an optional realization, target positioning using TDOA information includes the first reference signal and at least one detectable signal
Delay inequality.
The system includes transmitting station and receiving station；After transmitting station receives the radio signal that target satellite is sent, to wireless
Electric signal carries out preset signals processing, obtains the second reference signal；Broadcast transmission second reference signal；Receiving station receives target
After the radio signal that satellite is sent, preset signals processing is carried out to radio signal, obtains the first reference signal, the first reference
Signal and the second reference signal are the identical signal of frequency spectrum, signal acquisition time of the first reference signal and the second reference signal
The signal acquisition time is identical；At least one detectable signal of object to be measured reflection is received, detectable signal is object to be measured to second
Reference signal reflected after signal；Radar monitoring center is based on the first reference signal and at least one detectable signal, obtains
The positioning using TDOA information of object to be measured.As it can be seen that compared with prior art, radar monitoring center is set by receiving receiving station first
Standby received reference signal is instead of in the prior art from the received reference signal in transmitting station, thus without considering earth curvature
Reception limitation to reference signal, and by obtaining identical reference signal, it ensure that the consistency of reference signal, improve mesh
Mark the accuracy of tracking.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the traditional passive radar system provided；
Fig. 2A is a kind of structural representation of Passive Radar System based on target positioning provided by the embodiment of the utility model
Figure；
Fig. 2 B is that the structure of another Passive Radar System based on target positioning provided by the embodiment of the utility model is shown
It is intended to；
Fig. 3 A is a kind of structural schematic diagram of first receiving device in Fig. 2 B；
Fig. 3 B is that the structure of another Passive Radar System based on target positioning provided by the embodiment of the utility model is shown
It is intended to；
Fig. 4 is a kind of flow diagram of object localization method provided by the embodiment of the utility model；
Fig. 5 is a kind of structural schematic diagram of target locating set provided by the embodiment of the utility model；
Fig. 6 is the structural schematic diagram of a kind of electronic equipment provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, is not whole realities
Apply example.Based on the utility model embodiment, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, fall within the protection scope of the utility model.
Passive Radar System provided by the embodiment of the utility model based on target positioning can be as shown in Figure 2 A.The system
It may include: transmitting station 210, receiving station 220 and radar monitoring center 230.It is connect in system provided by the embodiment of the utility model
It includes identical first receiving device that station 220, which is received, with transmitting station 210, respectively by received radio signal, obtains reference
Signal, compared with prior art, restricted problem of the reference signal by earth curvature of transmitting station must be received by solving receiving station.
Below in conjunction with Figure of description, above system is described in detail.Wherein, transmitting station can be broadcasting station,
TV station or called station are illustrated so that transmitting station is TV station as an example below.
Transmitting station 210 as shown in Figure 2 B includes the first receiving device 211 and sending device 212.Receiving station 220 includes first
Receiving device 211 and at least one second receiving device 221.First receiving device 211 of transmitting station 210, for receiving target
The radio signal (or " satellite TV signal ") that satellite is sent；Preset signals processing is carried out to radio signal, obtains the
Two reference signals.
Preset signals processing may include radio signal is denoised, is demodulated, the processing such as clock is synchronous, modulation.
First receiving device 211 can such as be based on GPS positioning technology with the position of lock onto target satellite, obtain target satellite
Position.First receiving device 211 receives the radio signal that the target satellite is sent, and is based on preset signals processing technique, obtains
Take the second reference signal.
As shown in Figure 3A, the first receiving device 211 may include satellite reception unit 2111, it is GPS clock unit 2112, same
Walk adaptation unit 2113 and modulation unit 2114；
Satellite reception unit 2111, the satellite reception unit 2111 can be satellite antenna and receiver, and satellite antenna is used
In the radio signal for receiving target satellite transmission, receiver is used to radio signal being demodulated into baseband signal.
GPS clock unit 2112 is used for for exporting preset synchronised clock control signal to synchronous adaptation unit 2113
Time synchronization is carried out to baseband signal radio signal.
Synchronous adaptation unit 2113, for obtaining synchronous letter based on preset synchronised clock control signal and baseband signal
Number, i.e. the baseband signal of time synchronization.
Synchronous adaptation unit 2113 can receive Beidou radio signal, and be sent according to Beidou standard synchronisation clock apparatus
Beidou timing controling signal baseband signal that Beidou radio signal is demodulated carry out time synchronization.
It should be noted that in order to realize time synchronization with radio signal received in receiving station, first in receiving station
The preset synchronised clock control signal of receiving device is identical as the preset synchronised clock of transmitting station control signal.
Modulation unit 2114, for carrying out signal modulation to synchronization signal, obtaining the second reference using default modulation scheme
Signal, i.e. the second radiofrequency signal.
By taking transmitting station is TV station as an example, modulation unit 2114 modulates the synchronization signal obtained based on satellite TV signal
For digital television ground broadcast transmission system frame structure, Channel Coding and Modulation (Digital Television
Terrestrial Multimedia Broadcasting, TDMB) transmission standard the second reference signal.
Sending device 212 is used for the second reference signal of broadcast transmission.Sending device 212 is by received second reference signal
After amplification, outside broadcast transmission.
First receiving device 211 of receiving station 220, for receiving the radio signal of target satellite transmission；To radio
Signal carries out preset signals processing, obtains the first reference signal, i.e. the first radiofrequency signal.
Since receiving station and transmitting station include identical first receiving device, and comprising it is identical preset synchronous when
Clock signal, therefore receiving station the first reference signal and the second reference signal that obtain are the identical signal of frequency spectrum, first refers to
The signal acquisition time of signal and the signal acquisition time of the second reference signal are identical, for example, transmitting station 210 is in t0 reception
To a radio signal, receiving station 220 in t1 reception to a radio signal, after being demodulated into baseband signal respectively,
Through identical synchronised clock control signal can by transmitting station 210 in the baseband signal at t0 moment and receiving station 220 at the t1 moment
Baseband signal it is synchronous be the t2 moment baseband signal.
Second receiving device 221, for receiving the detectable signal of object to be measured reflection, which is object to be measured pair
Second reference signal reflected after signal.Second receiving device 221 can be echo antenna.
After the transmitting station on ground issues the second reference signal, and receiving station obtains the first reference signal, if passive radar system
Object to be measured is not present in the investigative range of system, the first receiving device of receiving station obtains the first reference signal, but transmitting station is sent out
The second reference signal will not be reflected by object to be measured out, and the second receiving device of receiving station cannot receive detectable signal at this time
(or " reflection echo signal ")；
If occurring object to be measured in the investigative range of Passive Radar System, the first receiving device of receiving station obtains first
Second receiving device of reference signal and receiving station receive object to be measured reflection after detectable signal (or " reflection echo letter
Number "), that is to say, that receiving station can not only get the first reference signal at this time, can also receive detectable signal.Due to second
Receiving device can receive at least one detectable signal, include that the second reference signal is corresponding at least one detectable signal
Detectable signal.
Radar monitoring center 230, for received at least based on the first reference signal and at least one second receiving device
One detectable signal obtains the positioning using TDOA information of object to be measured.
First reference signal and at least one detectable signal are subjected to relevant detection, obtain testing result, testing result packet
Include the corresponding detectable signal of the second reference signal of sending device transmission；Based on testing result and signal reception time, obtain to
Survey the positioning using TDOA information of target.Wherein, target positioning using TDOA information includes the first reference signal and at least one detectable signal
Delay inequality.
It should be noted that radar monitoring center 230 is based on the first reference signal and at least one second receiving device connects
At least one detectable signal received can also estimate the arrival direction, more at least one detectable signal that object to be measured reflects
The parameters such as general Le frequency displacement further improve the accuracy of target positioning.
In one example, by taking the transmitting station of Passive Radar System is TV station as an example.As shown in Figure 3B, TV station defends
Star antenna receives the radio signal of big-dipper satellite transmitting, and radio signal is demodulated into baseband signal, synchronous adaptation module
It carries out clock to baseband signal under the action of big dipper clock module to synchronize, signal modulation module believes the base band after synchronizing later
Number signal modulation process is carried out, obtain reference signal, transmitter carries out after signal amplification through transmitting antenna general reference signal
The reference signal broadcast transmission is gone out.
The satellite antenna of the receiving station of Passive Radar System also receives the radio signal of big-dipper satellite transmitting, and by nothing
Line electric signal is demodulated into baseband signal, and it is same that synchronous adaptation module carries out clock to baseband signal under the action of big dipper clock module
Step, signal modulation module carries out signal modulation process to the baseband signal after synchronizing and obtains reference signal later.Signal modulation mould
Block is by reference signal transmission to radar monitoring center.Wherein, the reference that the reference signal and transmitting station that receiving station obtains obtain is believed
Number frequency spectrum it is identical, and the signal of the first reference signal obtains the time with the signal of the second reference signal to obtain the time identical.
There are when object to be measured in the investigative range of Passive Radar System, at least one echo antenna of receiving station can be with
At least one detectable signal after receiving object to be measured reflection.Later, receiving station obtains itself reference signal and at least
One detectable signal carries out relevant detection, obtain with the matched detectable signal of the reference signal, which is transmitting station
The corresponding detectable signal of reference signal that antenna is sent.Signal reception time and receiving station itself to the matched detectable signal
The signal of obtained reference signal obtains the time, using time difference operation, obtains the positioning using TDOA information of object to be measured, thus
Realize the locating and tracking to the object to be measured.
The system includes transmitting station and receiving station；After transmitting station receives the radio signal that target satellite is sent, to wireless
Electric signal carries out preset signals processing, obtains the second reference signal；Broadcast transmission second reference signal；Receiving station receives target
After the radio signal that satellite is sent, preset signals processing is carried out to radio signal, obtains the first reference signal, the first reference
Signal and the second reference signal are the identical signal of frequency spectrum, signal acquisition time of the first reference signal and the second reference signal
The signal acquisition time is identical；At least one detectable signal of object to be measured reflection is received, detectable signal is object to be measured to second
Reference signal reflected after signal；Radar monitoring center is based on the first reference signal and at least one detectable signal, obtains
The positioning using TDOA information of object to be measured.As it can be seen that compared with prior art, radar monitoring center is set by receiving receiving station first
Standby received reference signal is instead of in the prior art from the received reference signal in transmitting station, thus without considering earth curvature
Reception limitation to reference signal, and by obtaining identical reference signal, it ensure that the consistency of reference signal, improve mesh
Mark the accuracy of tracking.
Fig. 4 is a kind of flow diagram of object localization method provided by the embodiment of the utility model.As shown in figure 4, should
Method may include:
Step 410 receives the radio signal that target satellite is sent.
The first receiving device of receiving station receives the radio signal that target satellite is sent in Passive Radar System.
The first receiving device of transmitting station also receives the radio that same target satellite is sent in Passive Radar System simultaneously
Signal.
Step 420 carries out preset signals processing to radio signal, obtains reference signal.
The first receiving device of receiving station carries out preset signals processing to radio signal in Passive Radar System, obtains ginseng
Examine signal.
Specifically, obtaining synchronization signal based on preset synchronised clock control signal and radio signal；Using default tune
Making mechanism carries out signal modulation to synchronization signal, obtains reference signal.
The first receiving device of transmitting station also carries out identical preset signals processing to radio signal simultaneously, obtains and connects
Receive identical reference signal of standing.
Step 430, broadcast transmission reference signal.
The reference signal that the sending device broadcast transmission of receiving station obtains in Passive Radar System.
Step 440, at least one detectable signal reflected based on reference signal and received object to be measured, obtain mesh to be measured
Target positioning using TDOA information.
Before executing the step, receiving station records signal acquisition time and at least one detectable signal of reference signal
Signal reception time.
Reference signal and at least one detectable signal are subjected to relevant detection, obtain testing result, which includes
Detectable signal corresponding with the reference signal that the matched transmitting station of the reference signal that receiving station obtains is sent；
Based on testing result, signal acquisition time and signal reception time, the positioning using TDOA information of object to be measured is obtained.
The radio signal that this method is sent by receiving target satellite, and radio signal is carried out at preset signals
Reason obtains the reference signal of receiving station and dispatching station；Dispatching station broadcast transmission reference signal；Receiving station is based on reference signal and connects
At least one detectable signal of the object to be measured reflection of receipts, obtains the positioning using TDOA information of object to be measured.As it can be seen that and the prior art
Compare, by by the received reference signal of receiving station instead of in the prior art from the received reference signal in transmitting station, thus not
It needs to consider that earth curvature limits the reception of reference signal, and by obtaining identical reference signal, ensure that reference signal
Consistency, improve the accuracy of target following.
Corresponding with the above method, the utility model embodiment also provides a kind of target locating set, as shown in figure 5, should
Target locating set includes: receiving unit 510, acquiring unit 520 and radio unit 530；
Receiving unit 510, for receiving the radio signal of target satellite transmission；
Acquiring unit 520 obtains reference signal for carrying out preset signals processing to radio signal；
Radio unit 530 is used for broadcast transmission reference signal；
Acquiring unit 520 is also used at least one detectable signal reflected based on reference signal and received object to be measured,
Obtain the positioning using TDOA information of object to be measured.
In an optional realization, acquiring unit 520 is specifically used for:
Signal and radio signal are controlled based on preset synchronised clock, obtains synchronization signal；
Using default modulation scheme, signal modulation is carried out to the synchronization signal, obtains reference signal.
In an optional realization, the upper device further includes recording unit 540；
Recording unit 540, the signal for the signal reception time and at least one detectable signal that record reference signal connect
Between time receiving.
In an optional realization, acquiring unit 520 is specifically used for:
Reference signal and at least one detectable signal are subjected to relevant detection, obtain testing result, testing result include with
The corresponding detectable signal of matched second reference signal of first reference signal；
Based on testing result and signal reception time, the positioning using TDOA information of object to be measured is obtained.
In an optional realization, target positioning using TDOA information includes the first reference signal and at least one detectable signal
Delay inequality.
The function of each functional unit of the utility model target locating set provided by the above embodiment, can be by above-mentioned
Various method steps realize, therefore, the specific work of each unit in target locating set provided by the embodiment of the utility model
Make process and beneficial effect, does not repeat again herein.
The utility model embodiment additionally provides a kind of electronic equipment, as shown in fig. 6, including processor 610, communication interface
620, memory 630 and communication bus 640, wherein processor 610, communication interface 620, memory 630 pass through communication bus
640 complete mutual communication.
Memory 630, for storing computer program；
Processor 610 when for executing the program stored on memory 630, realizes following steps:
Receive the radio signal that target satellite is sent；
Preset signals processing is carried out to radio signal, obtains reference signal；
Broadcast transmission reference signal；
Based at least one detectable signal that reference signal and received object to be measured reflect, the time difference of object to be measured is obtained
Location information.
In an optional realization, preset signals processing is carried out to radio signal, obtains reference signal, comprising:
Signal and radio signal are controlled based on preset synchronised clock, obtains synchronization signal；
Using default modulation scheme, signal modulation is carried out to the synchronization signal, obtains reference signal.
In an optional realization, the signal reception time of reference signal and the signal of at least one detectable signal are recorded
Receiving time.
In an optional realization, believed based at least one detection that reference signal and received object to be measured reflect
Number, obtain the positioning using TDOA information of object to be measured, comprising:
Reference signal and at least one detectable signal are subjected to relevant detection, obtain testing result, testing result include with
The corresponding detectable signal of matched second reference signal of first reference signal；
Based on testing result and signal reception time, the positioning using TDOA information of object to be measured is obtained.
In an optional realization, target positioning using TDOA information includes the first reference signal and at least one detectable signal
Delay inequality.
Communication bus mentioned above can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..For just
It is only indicated with a thick line in expression, figure, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, RAM), also may include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
The embodiment and beneficial effect solved the problems, such as due to each device of electronic equipment in above-described embodiment can join
Each step in embodiment as shown in Figure 4 realizes, therefore, the specific work of electronic equipment provided by the embodiment of the utility model
Make process and beneficial effect, does not repeat again herein.
In another embodiment provided by the utility model, a kind of computer readable storage medium is additionally provided, the calculating
It is stored with instruction in machine readable storage medium storing program for executing, when run on a computer, appoints so that computer executes in above-described embodiment
Object localization method described in one.
In another embodiment provided by the utility model, a kind of computer program product comprising instruction is additionally provided,
When run on a computer, so that computer executes any object localization method in above-described embodiment.
It should be understood by those skilled in the art that, the embodiment in the utility model embodiment can provide for method, system,
Or computer program product.Therefore, can be used in the utility model embodiment complete hardware embodiment, complete software embodiment,
Or the form of embodiment combining software and hardware aspects.Moreover, can be used in the utility model embodiment in one or more
It wherein include computer-usable storage medium (the including but not limited to magnetic disk storage, CD- of computer usable program code
ROM, optical memory etc.) on the form of computer program product implemented.
It is referring to (being in the utility model embodiment according to the method for embodiment, equipment in the utility model embodiment
System) and the flowchart and/or the block diagram of computer program product describe.It should be understood that can be realized by computer program instructions
The process and/or box in each flow and/or block and flowchart and/or the block diagram in flowchart and/or the block diagram
Combination.Can provide these computer program instructions to general purpose computer, special purpose computer, Embedded Processor or other can compile
The processor of journey data processing equipment is to generate a machine, so that passing through computer or other programmable data processing devices
The instruction that processor executes generates for realizing in one box of one or more flows of the flowchart and/or block diagram or more
The device for the function of being specified in a box.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment in the utility model embodiment has been described, those skilled in the art are once obtained
Cicada basic creative concept, then additional changes and modifications may be made to these embodiments.So appended claims are intended to
It is construed to include preferred embodiment and all change and modification for falling into range in the utility model embodiment.
Obviously, those skilled in the art can carry out various modification and variations to embodiment in the utility model embodiment
Without departing from the spirit and scope of embodiment in the utility model embodiment.If in this way, implementing in the utility model embodiment
These modifications and variations of example belong in the utility model embodiment within the scope of claim and its equivalent technologies, then this reality
It is also intended to include these modifications and variations in new embodiment.
Claims (6)
1. a kind of Passive Radar System based on target positioning, which is characterized in that the system comprises: transmitting station, receiving station and
Radar monitoring center；
The transmitting station, for receiving the radio signal of target satellite transmission；Preset signals are carried out to the radio signal
Processing obtains the second reference signal；Second reference signal described in broadcast transmission；
The receiving station, the radio signal sent for receiving the target satellite；The radio signal is carried out
The preset signals processing, obtains the first reference signal, and first reference signal is that frequency spectrum is identical with the second reference signal
Signal, the signal acquisition time of first reference signal are identical as the signal acquisition time of second reference signal；
At least one detectable signal of object to be measured reflection is received, the detectable signal is the object to be measured to second ginseng
Examine the signal after signal is reflected；
The radar monitoring center, for being based on first reference signal and at least one described detectable signal, described in acquisition
The positioning using TDOA information of object to be measured.
2. the system as claimed in claim 1, which is characterized in that the transmitting station includes the first receiving device and with described first
The connected sending device of receiving device, each receiving station includes first receiving device and at least one second receiving device；
First receiving device of the transmitting station, for receiving the radio signal of target satellite transmission；To the aerogram
Number carry out preset signals processing, obtain the second reference signal；
The sending device, for the second reference signal described in broadcast transmission；
First receiving device of the receiving station, the radio signal sent for receiving the target satellite；To described
Radio signal carries out the preset signals processing, obtains the first reference signal；
Second receiving device, for receiving the detectable signal of object to be measured reflection.
3. system as claimed in claim 2, which is characterized in that first receiving device includes: satellite reception unit, GPS
Clock unit, synchronous adaptation unit and modulation unit；
The satellite reception unit, for receiving the radio signal of target satellite transmission；
The GPS clock unit controls signal for exporting preset synchronised clock to the synchronous adaptation unit；
The synchronous adaptation unit, for obtaining based on the preset synchronised clock control signal and the radio signal
Synchronization signal；
The modulation unit, for carrying out signal modulation to the synchronization signal, obtaining with reference to letter using default modulation scheme
Number.
4. system as claimed in claim 1 or 2, which is characterized in that the system also includes storage equipment；
The storage equipment, for record first reference signal the signal acquisition time and at least one described detectable signal
Signal reception time.
5. system as claimed in claim 4, which is characterized in that the radar monitoring center, specifically for described first is joined
Examine signal and at least one described detectable signal carry out relevant detection, obtain testing result, the testing result include with it is described
The corresponding detectable signal of matched second reference signal of first reference signal；
Based on the testing result, the signal acquisition time and the signal reception time, the time difference for obtaining object to be measured is fixed
Position information.
6. the system as claimed in claim 1, which is characterized in that the positioning using TDOA information include first reference signal and
The delay inequality of at least one detectable signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480319.9U CN209296915U (en) | 2018-09-10 | 2018-09-10 | Passive Radar System based on target positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480319.9U CN209296915U (en) | 2018-09-10 | 2018-09-10 | Passive Radar System based on target positioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296915U true CN209296915U (en) | 2019-08-23 |
Family
ID=67653036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821480319.9U Active CN209296915U (en) | 2018-09-10 | 2018-09-10 | Passive Radar System based on target positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888124A (en) * | 2018-09-10 | 2020-03-17 | 周颖平 | Passive radar system based on target positioning and target positioning method |
-
2018
- 2018-09-10 CN CN201821480319.9U patent/CN209296915U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888124A (en) * | 2018-09-10 | 2020-03-17 | 周颖平 | Passive radar system based on target positioning and target positioning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10142778B2 (en) | Direction finding for legacy bluetooth devices | |
| US20200205115A1 (en) | Wireless positioning method and system using the same | |
| US20180349727A1 (en) | Hybrid multi-camera based positioning | |
| CN110187309A (en) | Indoor locating system | |
| CN108449793A (en) | One-dimensional positioning base station and localization method | |
| US10935625B2 (en) | Methods and systems for selecting the shortest path in a multi-path environment | |
| US11131746B2 (en) | Wireless positioning | |
| US20150268327A1 (en) | Ultrasound-based localization of client devices with inertial navigation supplement in distributed communication systems and related devices and methods | |
| US20190293807A1 (en) | Positioning method, assistant site, and system | |
| KR102308601B1 (en) | Method And System for Positioning based on Reverse Time Difference Of Arrival | |
| US20160313448A1 (en) | In-band pseudolite wireless positioning method, system and device | |
| Doiphode et al. | Survey of indoor positioning measurements, methods and techniques | |
| CN209296915U (en) | Passive Radar System based on target positioning | |
| CN110149592B (en) | Indoor positioning method, terminal, client front-end equipment and electronic equipment | |
| Hashem et al. | Deepnar: Robust time-based sub-meter indoor localization using deep learning | |
| CN208609206U (en) | One-dimensional positioning base station | |
| US20180302188A1 (en) | System and method for simultaneous transmission of the same radio signal packet from multiple anchor nodes | |
| KR20150023183A (en) | Apparatus for determining location of device and method thereof | |
| US10317508B2 (en) | Apparatus and methods for radio frequency ranging | |
| CN113242097B (en) | Underwater positioning method and related device | |
| CN114845386A (en) | Time synchronization and positioning method and system based on UWB base station secondary self-correction | |
| CN110888124A (en) | Passive radar system based on target positioning and target positioning method | |
| KR101547825B1 (en) | Positioning method and apparatus by using round-trip time | |
| WO2024168861A1 (en) | Methods and apparatuses for verification of wireless device location over satellite access network | |
| US20230273288A1 (en) | System and method for intregrated wireless data transmission with implicit location and timestamp with a location symbol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |