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 PDF

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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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antenna
polarized
receiver
electromagnetic wave
frequency switch
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向茂生
吴一戎
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Institute of Electronics of CAS
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Institute of Electronics of CAS
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Abstract

本发明涉及信息获取与处理技术领域，一种同时实现干涉和全极化成像的合成孔径雷达及方法。包括：两部接收机、一部发射机、两个环型器、一个高频开关，两个天线。方法包括：1)将天线1和天线2接成同极化的天线；2)发射机通过高频开关，发射出电磁波；3)通过天线1和天线2，分别将电磁波回波传送到接收机1和接收机2，实现了干涉成像。1)将天线1和天线2接成不同极化的天线；2)发射机通过高频开关，从天线发射水平极化电磁波；3)通过天线1和天线2，分别将电磁波回波传送到接收机1和接收机2，分别接收到了水平极化和垂直极化信号，因此，就获得了两幅水平极化水平极化HH和水平极化垂直极化HV图象。

The invention relates to the technical field of information acquisition and processing, and relates to a synthetic aperture radar and a method for simultaneously realizing interference and full polarization imaging. Including: two receivers, one transmitter, two circulators, one high frequency switch, two antennas. The method includes: 1) connecting the antenna 1 and the antenna 2 into a co-polarized antenna; 2) the transmitter transmits electromagnetic waves through a high-frequency switch; 3) transmitting the electromagnetic wave echo to the receiver through the antenna 1 and the antenna 2 respectively 1 and receiver 2 to achieve interference imaging. 1) Connect Antenna 1 and Antenna 2 into antennas with different polarizations; 2) The transmitter transmits horizontally polarized electromagnetic waves from the antenna through a high-frequency switch; 3) Through Antenna 1 and Antenna 2, respectively transmit electromagnetic wave echoes to the receiver Machine 1 and receiver 2 respectively receive horizontally polarized and vertically polarized signals, so two horizontally polarized horizontally polarized HH images and horizontally polarized vertically polarized HV images are obtained.

Description

A kind of synthetic-aperture radar and method that realizes interference and complete polarization imaging simultaneously
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)

1.一种同时实现干涉和全极化成像的合成孔径雷达，包括：两部接收机(1)，(2)、一部发射机、两个环型器(1)，(2)、一个高频开关，两个天线(1)，(2)，连接关系为，发射机接高频开关，通过高频开关和环型器(1)，(2)连接到天线(1)，(2)，天线(1)，(2)与环型器(1)，(2)相接，通过环型器(1)，(2)连接到接收机(1)，(2)。1. A synthetic aperture radar that realizes interference and full polarization imaging simultaneously, comprising: two receivers (1), (2), a transmitter, two circulators (1), (2), a High-frequency switch, two antennas (1), (2), the connection relationship is, the transmitter is connected to the high-frequency switch, and connected to the antenna (1), (2) through the high-frequency switch and the circulator (1), (2) ), the antennas (1), (2) are connected to the circulators (1), (2), and connected to the receivers (1), (2) through the circulators (1), (2). 2.一种同时实现干涉和全极化成像的合成孔径雷达方法，2. A synthetic aperture radar method for simultaneous interferometric and full-polarization imaging, 一、按下列方式和步骤可实现干涉成像1. Interferometric imaging can be realized in the following ways and steps 1)将天线1和天线2接成同极化的天线；1) Connect antenna 1 and antenna 2 into a co-polarized antenna; 2)发射机通过高频开关，接通天线1或天线2，发射出电磁波；2) The transmitter connects antenna 1 or antenna 2 through a high-frequency switch to emit electromagnetic waves; 3)通过天线1和天线2，分别将电磁波回波传送到接收机1和接收机2，这样，通过后续的信号处理，就实现了干涉成像；3) Through the antenna 1 and the antenna 2, the electromagnetic wave echo is transmitted to the receiver 1 and the receiver 2 respectively, so that the interference imaging is realized through subsequent signal processing; 二、按下列方式可实现极化成像2. Polarization imaging can be realized in the following way 1)将天线1和天线2接成不同极化的天线；1) Connect antenna 1 and antenna 2 into antennas with different polarizations; 2)发射机通过高频开关，接通到1，然后通过环型器将电磁波从天线1发射出去，即发射水平极化电磁波；2) The transmitter is connected to 1 through the high-frequency switch, and then the electromagnetic wave is emitted from the antenna 1 through the circulator, that is, the horizontally polarized electromagnetic wave is emitted; 3)通过天线1和天线2，分别将电磁波回波传送到接收机1和接收机2，这样，接收机1和接收机2分别接收到了水平极化和垂直极化信号，因此，就获得了两幅水平极化水平极化HH和水平极化垂直极化HV图象；3) Through the antenna 1 and the antenna 2, the electromagnetic wave echo is transmitted to the receiver 1 and the receiver 2 respectively, so that the receiver 1 and the receiver 2 respectively receive the horizontally polarized and vertically polarized signals, therefore, the obtained Two horizontally polarized horizontally polarized HH and horizontally polarized vertically polarized HV images; 4)接下来，发射机通过高频开关，接通到2，然后通过环型器将电磁波从天线2发射出去，即发射垂直极化电磁波；4) Next, the transmitter is connected to 2 through the high-frequency switch, and then the electromagnetic wave is emitted from the antenna 2 through the circulator, that is, the vertically polarized electromagnetic wave is emitted; 5)通过天线1和天线2，分别将电磁波回波传送到接收机1和接收机2，这样，接收机1和接收机2分别接收到了水平极化和垂直极化信号，因此，就获得了两幅垂直极化水平极化VH和垂直极化垂直极化VV图象；5) Through the antenna 1 and the antenna 2, the electromagnetic wave echoes are respectively transmitted to the receiver 1 and the receiver 2, so that the receiver 1 and the receiver 2 respectively receive the horizontally polarized and vertically polarized signals, therefore, the obtained Two vertically polarized horizontally polarized VH and vertically polarized vertically polarized VV images; 6)重复2至5的步骤。至此，就获得了HH，HV，VV，VH四幅全极化雷达影象图。6) Repeat steps 2 to 5. So far, four fully polarized radar images of HH, HV, VV, and VH have been obtained. 3.根据权利要求2所述的同时实现干涉和全极化成像的合成孔径雷达方法，其特征在于，将天线1和天线2接成同极化的天线；是一对水平极化天线或者一对垂直极化天线。3. the synthetic aperture radar method that realizes interference and full polarization imaging simultaneously according to claim 2, is characterized in that, antenna 1 and antenna 2 are connected into the antenna of same polarization; It is a pair of horizontally polarized antennas or a for vertically polarized antennas. 4.根据权利要求2所述的同时实现干涉和全极化成像的合成孔径雷达方法，其特征在于，将天线1和天线2接成不同极化的天线；是将天线1接成一个水平极化天线，将天线2接成一个垂直极化天线。4. the synthetic aperture radar method that realizes interference and full polarization imaging simultaneously according to claim 2, is characterized in that, antenna 1 and antenna 2 are connected into the antenna of different polarization; Be that antenna 1 is connected into a horizontal pole polarized antenna, connect antenna 2 to form a vertically polarized antenna.
CNA2005101079172A 2005-09-30 2005-09-30 Synthetic bore radar for realizing interference and total polarized image simultaneouslly and its method Pending CN1940593A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101498787B (en) * 2008-01-29 2011-02-09 电子科技大学 A Fast Imaging Method for Linear Array 3D Imaging Synthetic Aperture Radar
CN101482616B (en) * 2008-08-13 2011-06-01 中国科学院电子学研究所 A topographical 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 of electronic device, and control program of electronic device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101498787B (en) * 2008-01-29 2011-02-09 电子科技大学 A Fast Imaging Method for Linear Array 3D Imaging Synthetic Aperture Radar
CN101482616B (en) * 2008-08-13 2011-06-01 中国科学院电子学研究所 A topographical 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 Super-resolution imaging method for fully polarimetric SAR 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
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 of electronic device, and control program of electronic device

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