CN110048232A - A kind of device and method inhibited for GNSS passive detection direct wave - Google Patents
A kind of device and method inhibited for GNSS passive detection direct wave Download PDFInfo
- Publication number
- CN110048232A CN110048232A CN201910326293.5A CN201910326293A CN110048232A CN 110048232 A CN110048232 A CN 110048232A CN 201910326293 A CN201910326293 A CN 201910326293A CN 110048232 A CN110048232 A CN 110048232A
- Authority
- CN
- China
- Prior art keywords
- gnss
- sliding rail
- longitude
- signal
- passive detection
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 abstract description 3
- 230000010287 polarization Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The present invention provides a kind of device and method inhibited for GNSS passive detection direct wave, and wherein its spherical shape of the device, includes at least: being fixed on the pedestal latitude sliding rail on ground；Central connection node positioned at device top；Connect the longitude sliding rail of the pedestal latitude sliding rail Yu the central connection point；The track pulley of longitude sliding rail bottom；The multiple signal metal barricades moved along the longitude sliding rail；GNSS passive detection receiving antenna inside the spherical device；And servo-system, wherein the servo-system is configured to control the movement of some or all of multiple signal metal barricades according to GNSS satellite azimuth information to block to direct signal arrival bearing.The present apparatus and method can be effectively eliminated before direct signal enters detection receiving antenna, mitigate and weaken influence of the GNSS direct wave to detection receiver tracking processing loop.
Description
Technical field
This invention relates generally to the technical fields such as GNSS-R (GNSS remote sensing) and GNSS passive detection location.More specifically
Ground, the present invention relates to the device and method inhibited for GNSS passive detection direct wave.
Background technique
In recent years, with worldwide navigation position system (Global Navigation Satellite System, GNSS) letter
Number as third side emitter passive detection technology obtain research and application.GNSS navigation satellite signal is with quantity is more, covers
The features such as lid range wide (Global coverage), continuous-stable service, is used to have itself unique advantage when passive detection.GNSS-R
It is representative art most mature in GNSS passive detection field, it is usually by installing left-handed entelechy in positions such as aircraft ventrals
Change (LHCP) antenna, receives GNSS ground launch signal, it is distant that the survey of development ocean is high, wind, land humidity, forest cover etc. are surveyed in sea
Sense organ is surveyed, and has shown wide application prospect.
In GNSS-R, the detection receiving antenna positioned at positions such as ventrals is smaller by GNSS interference of the direct signal, and observes
Object is ground large scale remote sensing target, therefore generally can effectively inhibit through letter by way of exploring antenna polarization isolation
Number influence that (satellite navigation signals are right-handed circular polarization mode, can realize nearly 30dB using left-hand circular polarization mode to exploring antenna
Polarization isolation effect), without other complex process measures.
In addition to this earth observation form of GNSS-R, GNSS detection receiving antenna and system can also be disposed on ground,
The purpose of aerial target (such as aircraft, ballistic missile) is observed using similar principle, realizes air defense early warning.But this
When, since exploring antenna system is located at ground, lacks and blocks, influenced seriously by GNSS direct-path signal.Research and calculating
Show that GNSS direct signal can be higher by than reflection signal when target range is farther out or when radar cross section (RCS) is smaller
60dB or more.At this point, if relying only on antenna polarization isolation, it may be difficult to effectively realize and be extracted and processed to reflection signal.
Summary of the invention
In order to eliminate or at least mitigate above-mentioned technical problem, the present invention proposes a kind of for GNSS passive detection direct wave
The spherical surface mechanical structure device and method of inhibition.By the way that the metal baffle of whole movement can be raised at azimuth and height angular direction,
Carried out before GNSS direct signal arrives at the detection receiving antenna being located in device it is certain block and reflect, thus mitigate with
Weaken the influence of GNSS direct signal.
In an aspect, the present invention proposes a kind of device inhibited for GNSS passive detection direct wave, spherical
Shape includes at least:
It is fixed on the pedestal latitude sliding rail on ground；
Central connection node positioned at device top；
Connect the longitude sliding rail of the pedestal latitude sliding rail Yu the central connection point；
The track pulley of longitude sliding rail bottom；
The multiple signal metal barricades moved along the longitude sliding rail；
GNSS passive detection receiving antenna inside the spherical device；And
Servo-system,
Wherein the servo-system is configured to be controlled according to GNSS satellite azimuth information in multiple signal metal barricades
Some or all of movement to be blocked to direct signal arrival bearing.
In one embodiment, the central connection node includes the annulus with rail structure.
In yet another embodiment, the movement of signal metal barricade in an azimutal direction is by longitude sliding rail described
Sliding on pedestal latitude sliding rail and top central connection node is completed, and shifting of the signal metal barricade on height angular direction
The dynamic sliding by signal metal barricade on longitude sliding rail is completed.
It in another embodiment, further comprise the support frame being used to support inside device.
In one embodiment, wherein support frame as described above is tripod.
In yet another embodiment, wherein signal metal barricade is plate or with netted metal covering.
In another embodiment, wherein the height H of device, the signal metal barricade block n ° of angular range and
The diameter L of GNSS passive detection receiving antenna meets following formula:
In another aspect, the present invention provides a kind of method inhibited for GNSS passive detection direct wave, comprising:
It receives using according to the GNSS passive detection receiving antenna in device above-mentioned from each GNSS satellite
GNSS signal；
Received GNSS signal is handled using GNSS receiver, to obtain the azimuth information of each GNSS satellite；
According to the azimuth information of the GNSS satellite, controlled by the servo-system in described device described in
Signal metal shields thin plate movement, to block to direct signal arrival bearing.
In one embodiment, the servo-system by computer according to the azimuth information of the GNSS satellite come into
Row control.
In another embodiment, the GNSS receiver is arranged in the inside of described device.
Device and method proposed by the present invention can effectively be disappeared before direct signal enters detection receiving antenna
It removes, mitigates and weaken influence of the GNSS direct wave to detection receiver tracking processing loop
Detailed description of the invention
By read be provided by way of example only and with reference to attached drawing carry out being described below, be better understood with the present invention and
Its advantage, in which:
Fig. 1 is the side view for showing an apparatus in accordance with one embodiment of the invention；
Fig. 2 is the top view for showing an apparatus in accordance with one embodiment of the invention；And
Fig. 3 is the size design schematic diagram for showing device according to an embodiment of the invention.
Specific embodiment
By reference to elaborate using present disclosure embodiment principle illustrated embodiment in detailed below
Description and attached drawing, will be better understood from the feature and advantage of present disclosure.
Although detailed description contains many details, these details should not be construed as limited to this public affairs
The range of content is opened, but is merely illustrative the different examples and aspect of the present disclosure according to embodiment.It should be understood that this
Scope of the disclosure includes the other embodiments not being discussed in detail above.Without departing from smart as of the invention described herein
In the case where mind and range, can arrangement to the method and apparatus of present disclosure provided in this article, operation and details make
It will be apparent various other modifications to those skilled in the art out, change and change.
The present invention discloses a kind of spherical surface mechanical structure device and method for the inhibition of GNSS passive detection direct wave.Below
Technical solution of the present invention will be specifically described in conjunction with attached drawing.
Fig. 1 is the side view for showing an apparatus in accordance with one embodiment of the invention.As shown in fig. 1, of the invention to be used for
The device that GNSS passive detection direct wave inhibits includes at least the pedestal latitude track (1), structural body top for being fixed on ground
The rail of intermediate connecting node (2), connection pedestal latitude track and the longitude sliding rail (3) of intermediate connecting node, longitude sliding rail bottom
Support frame (5) that road pulley (4), construction inner are used to support, several signals that can be moved up and down on longitude sliding rail gold
Belong to the components such as barricade (6) and related spool system.
In one embodiment, GNSS passive detection receiving antenna can be set up in described device to defend to receive each GNSS
Star signal.Then, it is observed using GNSS receiver, to obtain each GNSS satellite azimuth information.Then, GNSS satellite orientation is utilized
Information, the metallic shield thin plate controlled on spherical surface machinery structural body by computer instruction or program is mobile, thus to through
Signal arrival bearing is blocked.
In determining the GNSS satellite orientation that needs block, GNSS passive detection receiver is according to currently received
GNSS reflects signal message, determines the satellite pseudorandom noise number (PRN) for being used for GNSS passive detection.Meanwhile it receiving and exporting
Azimuth and elevation angle of these satellites relative to detection receiver antenna is calculated in the radio news program of these satellites.
Then, servo-system is mobile by computer program control device upper metal shielding panel, so that it is respectively aligned to above-mentioned each GNSS and defends
Direct signal is blocked in star direction, realization.As described above, the movement of metal shielding board in an azimutal direction is sliding by track
The sliding taken turns on pedestal latitude track is completed, and the movement on height angular direction is by signal metal barricade in longitude sliding rail
On sliding complete.
It may include controller, drive feedback device and motor about servo-system.Controller is according to computer control
The information of processing procedure sequence output, determines the metal shielding board for needing to be adjusted and its corresponding adjusting control amount；Drive feedback dress
The major loop as servo-system is set, electric current needed for the size output motor by control amount, and it is big to adjust motor torque
It is small；Motor then presses power supply size driving machinery operating.
In one embodiment, the central connection node can be the annulus with rail structure.In another implementation
In example, the movement of the signal metal barricade in an azimutal direction is by longitude sliding rail in pedestal latitude sliding rail and top
Sliding in heart connecting node is completed, and passes through cunning of the signal metal barricade on longitude sliding rail in the movement on height angular direction
It is dynamic to complete.As an example, signal metal barricade can be plate or net metal face.
It is being fixed on the ground to guarantee that device can be stablized, can arrange the support being used to support in construction inner
Frame, the support frame can be using tripod or other structure types.For example, Fig. 2 shows according to an embodiment of the invention
The top view of device, wherein support frame uses the form of tripod.
Fig. 3 is the size design schematic diagram for showing device according to an embodiment of the invention.In view of navigation satellite
Remote apart from ground, incoming wave signal can be considered parallel wave, and very short (0.19m) positioned at the navigation satellite signal wavelength of 1.6GHz,
Diffraction poor performance, it is not easy to cut-through object.Therefore, the diameter l of signal metal barricade of the invention can be designed and be detected
Receiving antenna bore L is suitable, i.e. l ≈ L.
In the case, the angular range that the height H of the device of the invention will determine that every piece of metal shielding board is blocked.Reason
By upper, it is expected that every piece of barricade only blocks specific arrival bearing, without additionally blocking to the generation of other angles range around.So
And in practice, it is necessary to balance is made between range shielding board size and blocking.As shown in Fig. 3, when it is desirable that one straight
The angular range that diameter is blocked by the metal baffle of l is no more than n °, then device height H meets relational expression:
That is,
For example, being no more than when detecting receiving antenna diameter L=0.5m and every piece of metal shielding board being required to block angular range
At 10 °, device height is about H=2.87m.
Although the mode that the present invention is implemented is as above, the content is implementation that is of the invention for ease of understanding and using
Example, the range and application scenarios being not intended to limit the invention.Technical staff in any technical field of the present invention, not
Be detached from disclosed herein spirit and scope under the premise of, can make in the formal and details of implementation any modification with
Variation, but scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of device inhibited for GNSS passive detection direct wave, spherical shape include at least:
It is fixed on the pedestal latitude sliding rail on ground；
Central connection node positioned at device top；
Connect the longitude sliding rail of the pedestal latitude sliding rail Yu the central connection point；
The track pulley of longitude sliding rail bottom；
The multiple signal metal barricades moved along the longitude sliding rail；
GNSS passive detection receiving antenna inside the spherical device；And
Servo-system,
Wherein the servo-system is configured to control one in multiple signal metal barricades according to GNSS satellite azimuth information
A little or whole movements is to block direct signal arrival bearing.
2. the apparatus according to claim 1, wherein the central connection node includes the annulus with rail structure.
3. the apparatus according to claim 1, wherein the movement of the signal metal barricade in an azimutal direction passes through
Sliding of the longitude sliding rail on the pedestal latitude sliding rail and top central connection node is completed, and the signal metal screen
Shield plate is completed in the movement on height angular direction by sliding of the signal metal barricade on longitude sliding rail.
4. the apparatus according to claim 1 further comprises the support frame being used to support inside device.
5. device according to claim 4, wherein support frame as described above is tripod.
6. the apparatus according to claim 1, wherein the signal metal barricade is plate or with netted metal covering.
7. the apparatus according to claim 1, wherein the height H of described device, the signal metal barricade block angle
The diameter L of n ° of degree range and GNSS passive detection receiving antenna meets following formula:
8. a kind of method inhibited for GNSS passive detection direct wave, comprising:
It is come from using the GNSS passive detection receiving antenna in device described according to claim 1-7 any one to receive
In the GNSS signal of each GNSS satellite；
It is observed using GNSS receiver, to obtain the azimuth information of each GNSS satellite；
According to the azimuth information of the GNSS satellite, the signal in described device is controlled by the servo-system
Metallic shield thin plate is mobile, to block to direct signal arrival bearing.
9. according to the method described in claim 8, wherein the servo-system is as computer according to the GNSS satellite
Azimuth information is controlled.
10. according to the method described in claim 8, wherein the GNSS receiver is arranged in the inside of described device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326293.5A CN110048232B (en) | 2019-04-23 | 2019-04-23 | Device and method for restraining direct wave of GNSS passive detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326293.5A CN110048232B (en) | 2019-04-23 | 2019-04-23 | Device and method for restraining direct wave of GNSS passive detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110048232A true CN110048232A (en) | 2019-07-23 |
| CN110048232B CN110048232B (en) | 2021-03-19 |
Family
ID=67278579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910326293.5A Expired - Fee Related CN110048232B (en) | 2019-04-23 | 2019-04-23 | Device and method for restraining direct wave of GNSS passive detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110048232B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279649A (en) * | 2002-03-22 | 2003-10-02 | Denso Corp | Radar apparatus |
| JP2005086528A (en) * | 2003-09-09 | 2005-03-31 | Jsat Corp | Interference wave shielding structure for radio wave receiving antenna |
| CN1332220C (en) * | 2004-06-17 | 2007-08-15 | 上海交通大学 | Super broad band land radar automatic target identification method based on information fusion |
| CN102736069A (en) * | 2012-07-02 | 2012-10-17 | 北京理工大学 | Direct wave interference suppression method |
| CN207082634U (en) * | 2017-08-17 | 2018-03-09 | 江苏景云云计算有限公司 | A kind of mobile 4G low-frequency antennas |
| CN108270701A (en) * | 2017-12-29 | 2018-07-10 | 武汉大学 | One kind is suitable for WiFi external illuminators-based radar direct wave suppressing methods |
| CN108627857A (en) * | 2017-03-17 | 2018-10-09 | 展讯通信（上海）有限公司 | Multi-path detecting method, device and GNSS receiver |
| CN109001693A (en) * | 2018-07-27 | 2018-12-14 | 中科宇达（北京）科技有限公司 | The method and system that frequency modulated continuous wave radar direct wave inhibits |
| CN109270500A (en) * | 2018-09-29 | 2019-01-25 | 北京望远四象科技有限公司 | Direct path cancellation device, direct path cancellation method and UAV system |
| CN109557539A (en) * | 2018-12-27 | 2019-04-02 | 中国人民解放军空军工程大学 | Airborne Passive radar Ground moving targets detection method, apparatus and electronic equipment |
-
2019
- 2019-04-23 CN CN201910326293.5A patent/CN110048232B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279649A (en) * | 2002-03-22 | 2003-10-02 | Denso Corp | Radar apparatus |
| JP2005086528A (en) * | 2003-09-09 | 2005-03-31 | Jsat Corp | Interference wave shielding structure for radio wave receiving antenna |
| CN1332220C (en) * | 2004-06-17 | 2007-08-15 | 上海交通大学 | Super broad band land radar automatic target identification method based on information fusion |
| CN102736069A (en) * | 2012-07-02 | 2012-10-17 | 北京理工大学 | Direct wave interference suppression method |
| CN108627857A (en) * | 2017-03-17 | 2018-10-09 | 展讯通信（上海）有限公司 | Multi-path detecting method, device and GNSS receiver |
| CN207082634U (en) * | 2017-08-17 | 2018-03-09 | 江苏景云云计算有限公司 | A kind of mobile 4G low-frequency antennas |
| CN108270701A (en) * | 2017-12-29 | 2018-07-10 | 武汉大学 | One kind is suitable for WiFi external illuminators-based radar direct wave suppressing methods |
| CN109001693A (en) * | 2018-07-27 | 2018-12-14 | 中科宇达（北京）科技有限公司 | The method and system that frequency modulated continuous wave radar direct wave inhibits |
| CN109270500A (en) * | 2018-09-29 | 2019-01-25 | 北京望远四象科技有限公司 | Direct path cancellation device, direct path cancellation method and UAV system |
| CN109557539A (en) * | 2018-12-27 | 2019-04-02 | 中国人民解放军空军工程大学 | Airborne Passive radar Ground moving targets detection method, apparatus and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110048232B (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11409003B1 (en) | Global navigation satellite system beam based attitude determination | |
| CN106291477B (en) | Two-dimentional frequency mutually sweeps small target detection system | |
| US7372774B1 (en) | System for detecting, tracking, and reconstructing signals in spectrally competitive environments | |
| CN105548982B (en) | A kind of radar calibration method based on GPS carrier phase difference technology | |
| CN206619700U (en) | A kind of two dimensional phased array antenna applied to wireless frequency compact system | |
| CN1633050A (en) | System and method for implementing aerial target monitoring based on public mobile communication network | |
| CN113253213A (en) | Method and system for measuring ionosphere echo space distribution characteristics of high-frequency ground wave radar | |
| US7277053B2 (en) | Apparatus and methods for detecting and locating signals | |
| RU96664U1 (en) | MOBILE THREE ORDER DETECTION RADAR | |
| CN102096067A (en) | Passive radar direct wave interference suppression method based on compass as external radiation source | |
| RU2303229C1 (en) | Method for formation of stabilization and homing signal of movable carrier and on-board homing system for its realization | |
| CN113409400A (en) | Automatic tracking-based airborne photoelectric system target geographic positioning method | |
| CN206235731U (en) | A kind of GPR equipment | |
| RU150931U1 (en) | SEMI-ACTIVE RADAR STATION DETECTION FOR LAUNCHING SPACE DEVICES AND BALLISTIC ROCKETS IN THE FIELD OF THE LIGHT OF THE SATELLITE DIGITAL TELEVISION BROADCASTING | |
| CN109425875B (en) | Satellite signal separation processing device and method | |
| CN106197174A (en) | The adaptability analysis method of bullet application in a kind of missile-borne magnetic assembled gesture measurement apparatus | |
| CN1776451A (en) | Radio emitting source positioning method and system | |
| CN111427072B (en) | GNSS occultation signal continuous receiving method and receiving antenna system of aerostat platform | |
| CN110048232A (en) | A kind of device and method inhibited for GNSS passive detection direct wave | |
| CN107942325A (en) | A kind of anti-intrusion device based on millimetre-wave radar | |
| CN107422325A (en) | A kind of complete polarization ground polarization sensitive synthetic aperture radar system | |
| CN207601303U (en) | Anti-intrusion device based on millimetre-wave radar | |
| CN110208741A (en) | A kind of direct localization method of over the horizon single goal for surveying phase based on more circle battle arrays | |
| RU2615988C1 (en) | Method and system of barrier air defence radar detection of stealth aircraft based on gsm cellular networks | |
| Davydov et al. | Selection basis of an antenna for a radio receiver of a small-sized module of a pulse-phase radio navigation system of a moving object |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |