A Synthetic Aperture Radar System Verification Method

A synthetic aperture radar and system verification technology, applied in the field of synthetic aperture radar system test verification, can solve problems such as high cost, modified aircraft, long cycle, etc., and achieve the effect of low cost, meeting design requirements, and good imaging effect

Active Publication Date: 2011-04-27
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0010] Realization method: use airborne test to verify the synthetic aperture radar system, which is also the most ideal method to verify the radar system, and can meet the system verification requirements, but the main disadvantage is that it needs to modify the aircraft, which is costly and takes a long time

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  • A Synthetic Aperture Radar System Verification Method
  • A Synthetic Aperture Radar System Verification Method

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Embodiment Construction

[0034] Such as figure 1 As shown, synthetic aperture radar is a high-resolution imaging radar, which can obtain spatial resolution comparable to that of optical photography, that is, high two-dimensional resolution of azimuth and distance. The improvement of the resolution of synthetic aperture radar in the range direction depends on the transmission of chirp pulse signals, and the high resolution is obtained through pulse compression technology when receiving, and the improvement of resolution in azimuth direction is based on the principle of synthetic aperture.

[0035] The general synthetic aperture radar adopts the working mode of front and side view, such as figure 1 It can be seen from the principle of synthetic aperture that vehicle-mounted SAR imaging is basically the same as airborne SAR imaging. On the one hand, the relative movement of the target (radar working in side-view mode) can be achieved through the movement of the vehicle (loaded with radar) , the radar an...

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Abstract

Synthetic aperture radar system verification method, (1) selection of imaging route, selection of imaging road surface, and satisfying synthetic aperture radar imaging conditions; (2) radar modification, radar electronic equipment is loaded on the car, and the radar antenna beam is required to point to the side view , that is, the center of the radar beam is perpendicular to the forward direction of the radar, and the radar incidence angle should be adjusted according to the target to ensure that the radar beam hits the target; , Radar repetition frequency and the A / D sampling control gate in the radar receiver are corrected: (4) Carry out the vehicle test, get the radar data, and complete the imaging processing of the data; (5) Carry out the analysis of the radar image and the evaluation of the test effect. The invention has the advantages of low cost, long imaging distance, and the imaging effect is equivalent to the verification effect of the airborne test.

Description

technical field [0001] The invention relates to a synthetic aperture radar system test verification method. Background technique [0002] Synthetic aperture radar system is a very complex electronic equipment, which involves almost all technical fields of electronic equipment development, such as antenna technology, microwave technology, system control technology, digital processing technology and other technical fields. For synthetic aperture radar systems, how to verify the system-level technical indicators and the rationality of system design is a technical problem. Usually, it cannot be realized through extension testing and laboratory testing, and can only be realized through analysis or simulation. However, analysis and There is a big difference between simulation and actual application, and it cannot directly prove whether the system technical indicators meet the design requirements and explain that the system design is reasonable. [0003] Synthetic Aperture Radar (...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01S13/90G01S7/40
Inventor欧祥荣王小宁刘丽霞王科游继红段崇棣
OwnerXIAN INSTITUE OF SPACE RADIO TECH