A wide-range coverage method for solid-state pulse compression radar
A pulse compression radar and distance technology, applied in the field of radar detection, can solve the problems of antenna beam peak angle deflection, inconsistent pulse echo azimuth, affecting target azimuth accuracy, etc., to ensure tracking accuracy and suppress interference between pulse echoes.
Active Publication Date: 2019-03-15
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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Problems solved by technology
For a ship traffic management radar system that requires wide-range coverage for target detection, when the pulse transmission frequency changes, the peak angle of the antenna beam will also deflect, resulting in inconsistent azimuths of different pulse echoes, which will eventually affect the azimuth accuracy of the target
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[0023] Combining with the application of a ship traffic management solid-state pulse compression radar to water area target monitoring, the technical solution of the invention is described in detail as follows.
[0024] The solid-state pulse compression radar is installed in a certain port, and it mainly realizes the monitoring and tracking of ship targets within 30 nautical miles near the port. This technical solution is used to cover wide-range targets. figure 1 The flow chart of the solid-state pulse compression radar wide-range coverage method in the present invention is given, which includes the following steps:
[0025] Step 1: In the same radar cycle, the radar successively transmits and receives three pulse signals whose time widths range from small to large and whose center frequencies are different from each other. After one pulse is transmitted and received, the next pulse is transmitted and received; That is, the radar cycle includes 3 sub-periods with increasing d...
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The invention discloses a solid-state pulse compression radar wide-distance covering method. The solid-state pulse compression radar wide-distance covering method comprises the steps of in one radar period, successively transmitting and receiving three pulse signals of which time bandwidths increase from least to largest, and furthermore the central frequencies of the three pulse signals are different from one another, and after one pulse is transmitted and received, performing transmission and receiving of a next pulse, namely a radar period comprises three sub-periods of which the time lengths increase from least to largest, and each sub-period comprises transmitting and receiving of one pulse signal; performing sampling, pulse compression, accumulation and signal detection on each pulse echo; performing distance alignment and fusion on detected data; and performing direction correction on a detected target according to antenna wave beam peak angle data with different transmitting data. The solid-state pulse compression radar wide-distance covering method has advantages of realizing wide-distance coverage in radar detection, effectively restraining other pulse echo interferences and ensuring high detection direction accuracy of the radar.
Description
technical field [0001] The invention belongs to the field of radar detection, and in particular relates to a wide-distance coverage method for solid-state pulse compression radar. Background technique [0002] Pulse compression radar realizes the detection and tracking of the corresponding target by receiving the microwave signal reflected by the target. This type of radar microwave transmission and reception share a pair of antennas. Therefore, the target echo cannot be received at the time of microwave transmission, forming a radar detection blind spot. The early magnetron radar has a higher peak transmission power, the radar distance resolution unit is proportional to the transmission pulse width, and the radar operating distance is also proportional to the transmission pulse width. Therefore, the longer detection distance of this type of radar is accompanied by the decline of distance resolution performance. The solid-state transmitter combines pulse compression technol...
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IPC IPC(8): G01S7/28G01S13/02
CPCG01S7/28G01S13/02
Inventor 张延强潘清云马哲张晓菲曹德胜王玮阚津曾宇翔董国斌张长远
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST