A Fast Calculation Method of Asymmetric Radar Irradiation Area
A technology of irradiating area and radar irradiation. It is applied in complex mathematical operations, radio wave measurement systems, instruments, etc. It can solve the problems of large double-antenna cross-irradiation area and poor real-time performance, so as to improve the calculation speed and accuracy and increase the collection volume. Effect
Active Publication Date: 2022-03-01
中国电波传播研究所
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Problems solved by technology
However, the problems of this method are: ① The cross-irradiation area of the double antennas calculated is larger than the actual situation; ② The integration method makes the real-time performance of the calculation relatively poor. The size of the irradiation area of the corresponding intersection area, and then use the look-up table method
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Embodiment 1
[0073] Embodiment 1, this embodiment discloses a fast calculation method of an asymmetric radar exposure area, the improvement of which includes the following steps:
[0074] Step 1, establish the asymmetric transmit-receive antenna irradiation area equation:
[0075] The radar irradiation area of the dual-antenna system is the intersection area of the transmitting antenna irradiation area and the receiving antenna irradiation area, and the shape of the antenna near-area irradiation area is different from the shape of the far-area irradiation area. As the incident angle becomes larger, the far-area irradiation area Far larger than the near zone irradiation area.
[0076] Such as figure 2 As shown, the radar transmits signals from the transmitting antenna T, and after being reflected by each scattering unit in the intersection area irradiation area, the signal is transmitted back to the receiving antenna R, so the premise that the receiving antenna R can receive the signa...
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The invention discloses a fast calculation method of asymmetric radar irradiation area, comprising the following steps: Step 1, establishing an asymmetrical transmitting and receiving antenna irradiation area equation; Step 2, creating an adaptive cross-illumination area fast numerical calculation method. The invention proposes an asymmetrical method for rapidly calculating the irradiated area of the radar. The rectangular coordinate system is established based on the radar receiving antenna, and then the near area and the near-area and Finally, the calculation step size corresponding to different incident angles is obtained by the step size correction method, and the cross irradiation area of the transceiver antenna corresponding to different incident angles is solved. Compared with the original method, the calculation speed and accuracy of the radar irradiation area of the dual-antenna system are improved, and the collection amount of effective radar echo data per unit time is increased.
Description
technical field [0001] The invention belongs to the field of radar measurement, in particular to a method for quickly calculating the radar irradiation area for measuring the separation of radar transmitting and receiving antennas in the field. Background technique [0002] Radar is generally divided into pulse system and continuous wave system in terms of system. The pulse system radar adopts the method of sharing the transmitting and receiving antennas, and the continuous wave system radar adopts the method of separating the transmitting and receiving antennas. When the radar collects echo data against the ground and sea surface background, it is generated by each scattering element located in the area illuminated by the radar background. For the pulse system, the calculation method of the irradiation area is relatively simple. When the depression angle is relatively small, the irradiation area Among them, R and φ a are the distance from the radar to the target and the ...
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IPC IPC(8): G01S7/40G06F17/11
CPCG01S7/4004G06F17/11
Inventor 张浙东张玉石黎鑫许心瑜李清亮夏晓云张金鹏赵鹏万晋通尹志盈朱秀芹余运超李善斌尹雅磊李慧明
Owner 中国电波传播研究所