CN1940593A - Synthetic bore radar for realizing interference and total polarized image simultaneouslly and its method - Google Patents
Synthetic bore radar for realizing interference and total polarized image simultaneouslly and its method Download PDFInfo
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- CN1940593A CN1940593A CNA2005101079172A CN200510107917A CN1940593A CN 1940593 A CN1940593 A CN 1940593A CN A2005101079172 A CNA2005101079172 A CN A2005101079172A CN 200510107917 A CN200510107917 A CN 200510107917A CN 1940593 A CN1940593 A CN 1940593A
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Abstract
A method for simultaneously realizing interference and completely polarized imaging includes connecting antenna 1 and 2 to be homopolarized antenna and using emitter to emit electromagnetic wave (EW), receiving echo of EW by two said antennas and sending it separately to two receivers for realizing interference imaging; connecting antenna 1 and 2 to be nonhomopolarized antenna and emitting level polarized EW, transmitting echo of EW separately to two receivers through two said antennas for obtaining a level polarized HH image and a level vertical HV image. The synthetic aperture radar used fro realizing said method is also disclosed.
Description
Technical field
The information of the present invention relates to is obtained and processing technology field, particularly a kind of synthetic-aperture radar and method that realizes interference and complete polarization imaging simultaneously.
Background technology
Interference synthetic aperture radar (SAR) technology is on traditional SAR remote sensing technology basis, in conjunction with differential GPS and inertia measurement technology and the new spatial remote sensing technology that grows up has round-the-clock, the round-the-clock characteristics of obtaining the digital elevation image.The interference SAR technology is measured traditional SAR and is extended to three dimensions from high-resolution object image two-dimensionally, is considered to the unprecedented earth observation from space technology that has potentiality.
Polarization (or multipolarization) synthetic-aperture radar is can provide the abundantest target measurement information at present, helps identification of targets, can solve the problem that traditional single polarization radar cann't be solved.Polarization SAR can measurement target the complete polarization scattering properties, utilize the characteristic of target scattering, scattering mechanism that can better objective of interpretation to polarization sensitive.Aspect military surveillance, the Classification and Identification aspect of agricultural, forestry etc. is widely used.
The implementation of traditional polarization (or multipolarization) synthetic-aperture radar is to receive by increase poliarizing antenna and hyperchannel to finish.
Because " airborne interference SAR system " is a binary channels receiving radar, therefore, we want to utilize and have developed " airborne interference SAR system " finished and realize being polarized to picture.If possible, then, can either possess the interference imaging function, possess the polarization imaging function again, very application prospects will be arranged at same polarization sensitive synthetic aperture radar system.
Summary of the invention
To achieve these goals, we think hard in the microwave combination.I.e. ingenious combination by various switches, microwave device arrives in same polarization sensitive synthetic aperture radar system, can either possess the interference imaging function, possesses the purpose of polarization imaging function again.
By anatomizing and the function demonstration of a large amount of devices, we are by combination of devices and sequential control cleverly, have finally finished to interfere simultaneously and the synthetic-aperture radar method of complete polarization imaging designs.
Our new method mainly is to have adopted double antenna and the binary channels technology in the airborne interference SAR system, in conjunction with microwave device combination cleverly.If double antenna wherein is like-polarized, can realize interference imaging.If double antenna wherein is different polarization, can realize the complete polarization imaging.According to this pattern, we have obtained a large amount of interference and polarization SAR data.Successfully realized on a polarization sensitive synthetic aperture radar system, finished interference and be polarized to picture.
Description of drawings
Fig. 1 is a synthetic-aperture radar method flow diagram of realizing interference and complete polarization imaging simultaneously of the present invention.
Fig. 2 is that the present invention realizes interfering the connected mode figure with six kinds of parts of the synthetic-aperture radar of complete polarization imaging simultaneously.
Fig. 3 is a conceptual scheme of realizing interference imaging.
Fig. 4 is a conceptual scheme of realizing being polarized to picture.
Fig. 5 is a pair of horizontally-polarized antenna figure.
Fig. 6 is a pair of vertical polarized antenna figure.
Fig. 7 is the antenna installation diagram.
Embodiment
Make that synthetic-aperture radar realizes interfering and the complete polarization imaging simultaneously, we have proposed following method:
The first, prepare the parts of following necessity.
To in same polarization sensitive synthetic aperture radar system, realize interfering and being polarized to picture, must possess following condition:
1. two receivers
2. transmitter
3. a pair of horizontally-polarized antenna
4. a pair of vertical polarized antenna
5. two annular devices
6. HF switch.
The second, above-mentioned parts will connect by shown in the figure.Referring to Fig. 2.
A kind of realize the interference simultaneously and the synthetic-aperture radar of complete polarization imaging, comprising: two receivers (1), (2), transmitter, two annular devices (1), (2), a HF switch, two antennas (1), (2), annexation is that transmitter connects HF switch, by HF switch and annular device (1), (2) be connected to antenna (1), (2), antenna (1), (2) with annular device (1), (2) join, by annular device (1), (2) be connected to receiver (1), (2).
The 3rd, follow these steps to operation.Referring to Fig. 1.
One, can realize interference imaging with step in the following manner
1) antenna 1 and antenna 2 are connected into like-polarized antenna; For example, a pair of horizontally-polarized antenna or a pair of vertical polarized antenna.
2) transmitter is connected antenna 1 or antenna 2 by HF switch, launches electromagnetic wave;
3) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this,, has just realized interference imaging by follow-up signal Processing.
Two, can realize being polarized to picture in the following manner
1) antenna 1 and antenna 2 are connected into the antenna of different polarization; For example, antenna 1 is connected into a horizontally-polarized antenna, antenna 2 is connected into a vertical polarized antenna.
2) transmitter is switched to 1 by HF switch, by annular device electromagnetic wave is launched from antenna 1 then, i.e. the emission level polarized electromagnetic wave;
3) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this, receiver 1 and receiver 2 have received horizontal polarization and vertical polarization signal respectively, therefore, two width of cloth horizontal polarization horizontal polarizations (HH) and horizontal polarization vertical polarization (HV) image have just been obtained;
4) next, transmitter is switched to 2 by HF switch, by annular device electromagnetic wave is launched from antenna 2 then, promptly launches the vertical polarization electromagnetic wave;
5) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this, receiver 1 and receiver 2 have received horizontal polarization and vertical polarization signal respectively, therefore, two width of cloth vertical polarization horizontal polarizations (VH) and vertical polarization (VV) image have just been obtained;
6) step of repetition 2 to 5.So far, just obtained HH, HV, VV, four width of cloth polarization radar shadowgraphs such as VH.
Fig. 3 is scheme, antenna 1 and antenna 2 same polarizations that realize interference imaging.
Fig. 4 is the scheme that realizes being polarized to picture, antenna 1 level, antenna 2 vertical polarizations.
Fig. 5 is a pair of horizontally-polarized antenna pictorial diagram.
Fig. 6 is a pair of vertical polarized antenna pictorial diagram.
Fig. 7 is the antenna installation diagram.
Claims (4)
1. realize to interfere simultaneously and the synthetic-aperture radar of complete polarization imaging for one kind, comprising: two receivers (1), (2), transmitter, two annular devices (1), (2), a HF switch, two antennas (1), (2), annexation is that transmitter connects HF switch, by HF switch and annular device (1), (2) be connected to antenna (1), (2), antenna (1), (2) with annular device (1), (2) join, by annular device (1), (2) be connected to receiver (1), (2).
2. realize to interfere simultaneously and the synthetic-aperture radar method of complete polarization imaging for one kind,
One, can realize interference imaging with step in the following manner
1) antenna 1 and antenna 2 are connected into like-polarized antenna;
2) transmitter is connected antenna 1 or antenna 2 by HF switch, launches electromagnetic wave;
3) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this,, has just realized interference imaging by follow-up signal Processing;
Two, can realize being polarized to picture in the following manner
1) antenna 1 and antenna 2 are connected into the antenna of different polarization;
2) transmitter is switched to 1 by HF switch, by annular device electromagnetic wave is launched from antenna 1 then, i.e. the emission level polarized electromagnetic wave;
3) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this, receiver 1 and receiver 2 have received horizontal polarization and vertical polarization signal respectively, therefore, two width of cloth horizontal polarization horizontal polarization HH and horizontal polarization vertical polarization HV image have just been obtained;
4) next, transmitter is switched to 2 by HF switch, by annular device electromagnetic wave is launched from antenna 2 then, promptly launches the vertical polarization electromagnetic wave;
5) by antenna 1 and antenna 2, respectively the electromagnetic wave echo is sent to receiver 1 and receiver 2, like this, receiver 1 and receiver 2 have received horizontal polarization and vertical polarization signal respectively, therefore, two width of cloth vertical polarization horizontal polarization VH and vertical polarization VV image have just been obtained;
6) step of repetition 2 to 5.So far, just obtained HH, HV, VV, VH four width of cloth polarization radar shadowgraphs.
3. the synthetic-aperture radar method that realizes interference and complete polarization imaging simultaneously according to claim 2 is characterized in that, antenna 1 and antenna 2 are connected into like-polarized antenna; Be a pair of horizontally-polarized antenna or a pair of vertical polarized antenna.
4. the synthetic-aperture radar method that realizes interference and complete polarization imaging simultaneously according to claim 2 is characterized in that, antenna 1 and antenna 2 is connected into the antenna of different polarization; Be that antenna 1 is connected into a horizontally-polarized antenna, antenna 2 is connected into a vertical polarized antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005101079172A CN1940593A (en) | 2005-09-30 | 2005-09-30 | Synthetic bore radar for realizing interference and total polarized image simultaneouslly and its method |
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| CNA2005101079172A CN1940593A (en) | 2005-09-30 | 2005-09-30 | Synthetic bore radar for realizing interference and total polarized image simultaneouslly and its method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498787B (en) * | 2008-01-29 | 2011-02-09 | 电子科技大学 | Linear array three-dimensional imaging synthetic aperture radar fast imaging method |
| CN101482616B (en) * | 2008-08-13 | 2011-06-01 | 中国科学院电子学研究所 | Topographic survey method |
| CN102331575A (en) * | 2011-06-23 | 2012-01-25 | 中国电子科技集团公司第三十八研究所 | Single-pass full-polarization interferometric synthetic aperture radar (SAR) |
| CN103983968A (en) * | 2014-03-20 | 2014-08-13 | 西安电子科技大学 | Complete polarization type SAR super-resolution imaging method based on distributed compressed sensing |
| CN106093881A (en) * | 2016-06-01 | 2016-11-09 | 中国科学院电子学研究所 | The combined receiving method of a kind of microwave signal and device |
| CN113678017A (en) * | 2019-04-25 | 2021-11-19 | 京瓷株式会社 | Electronic device, control method for electronic device, and control program for electronic device |
-
2005
- 2005-09-30 CN CNA2005101079172A patent/CN1940593A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498787B (en) * | 2008-01-29 | 2011-02-09 | 电子科技大学 | Linear array three-dimensional imaging synthetic aperture radar fast imaging method |
| CN101482616B (en) * | 2008-08-13 | 2011-06-01 | 中国科学院电子学研究所 | Topographic survey method |
| CN102331575A (en) * | 2011-06-23 | 2012-01-25 | 中国电子科技集团公司第三十八研究所 | Single-pass full-polarization interferometric synthetic aperture radar (SAR) |
| CN103983968A (en) * | 2014-03-20 | 2014-08-13 | 西安电子科技大学 | Complete polarization type SAR super-resolution imaging method based on distributed compressed sensing |
| CN103983968B (en) * | 2014-03-20 | 2016-03-23 | 西安电子科技大学 | Based on the full-polarization SAR super-resolution imaging method of distributed compression perception |
| CN106093881A (en) * | 2016-06-01 | 2016-11-09 | 中国科学院电子学研究所 | The combined receiving method of a kind of microwave signal and device |
| CN106093881B (en) * | 2016-06-01 | 2018-09-07 | 中国科学院电子学研究所 | A kind of combined receiving method and device of microwave signal |
| CN113678017A (en) * | 2019-04-25 | 2021-11-19 | 京瓷株式会社 | Electronic device, control method for electronic device, and control program for electronic device |
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