Radar and method for performing target detection by using radar
A target detection and radar technology, applied in the field of remote sensing information, can solve the problems of affecting the observation distance, affecting the imaging quality, unfavorable real-time observation, etc., and achieve the effect of speeding up the imaging speed, increasing the detection distance, and facilitating real-time monitoring
Pending Publication Date: 2022-08-05
WUHAN UNIV
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Problems solved by technology
The MIMO radar can achieve a very high monitoring frequency, but because the antenna spacing and antenna size are a pair of contradictions, and the antenna size directly affects the antenna gain, which in turn affects the observation distance, and the antenna spacing affects the imaging quality
In addition, the currently commonly used synthetic aperture radar imaging algorithm has low efficiency, which is not conducive to real-time observation
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[0080] 1. First, the structure of the present invention is introduced. The present invention includes an antenna, a receiving system, a transmitting system, and a short track, on which a receiving system or a transmitting system, or a receiving system and a transmitting system that can reciprocate on the short track are arranged (it should be noted that in this embodiment, , and also introduces the simultaneous setting of the receiving system and the transmitting system on the track, but since this is not the most economical mode, it is not recommended to use it. In order to reduce the power consumption of the track motor, generally only a small number of antennas are placed on the track). The invention combines the characteristics of MIMO with the advantages of the orbital synthetic aperture radar, adopts the single-transmit-multiple-receive or multiple-transmission-multiple-receive mode in the antenna transceiver system part, and reasonably designs the size of the antenna to ...
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The invention relates to a radar and a method for performing target detection by using the radar. The radar comprises an antenna, a receiving system, a transmitting system and a short track, a receiving system capable of reciprocating on the short track is arranged on the short track; or a transmitting system; or a receiving system and a transmitting system. The invention has the following advantages: 1, the scanning speed is greatly improved, the track length is shortened, the mechanical complexity is reduced, the power consumption is reduced, and the scanning speed is improved; compared with an array type synthetic aperture radar, the detection distance is increased, and the imaging resolution is improved. 2, the imaging speed of the synthetic aperture radar is greatly improved, the requirement of an imaging algorithm on resources is reduced, and imaging is carried out by adopting a method for quickly searching an antenna simulation array angle, so that the imaging speed is greatly increased, memory resources are saved, and real-time monitoring is facilitated;
Description
technical field [0001] The invention relates to the field of remote sensing information, in particular to a radar and a method for detecting targets by using the radar. Background technique [0002] Radar interferometry is an important precision measurement method. Microwave radar has the advantages of good penetration, long distance and high precision, and is widely used in disaster prevention and mitigation and structure deformation monitoring. Since a single fixed real aperture radar does not have azimuth resolution, synthetic aperture radar is often used in practice to achieve azimuth resolution, so as to obtain the position of the target. The data volume of synthetic aperture radar is larger than that of a single fixed real aperture radar, and the processing method is more complicated. The current synthetic aperture methods are generally orbital, rotary, and MIMO. The most classic mode is the orbital type, which has extremely mature technology, stable work and high p...
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Patent Timeline
Login to View More IPC IPC(8): G01S13/90
CPCG01S13/9023G01S13/9052G01S2013/0245G01S13/90G01S7/298G01S7/411G01S13/9029
Inventor张涛邹进贵
OwnerWUHAN UNIV