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A Space Synchronization Method for Bistatic SAR Imaging System for Aircraft Landing

An imaging system and aircraft technology, applied in the field of electronics, can solve the problems of reduced use efficiency of the airborne runway scene image observation system, etc.

Active Publication Date: 2018-09-18
成都汇蓉国科微系统技术有限公司
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AI Technical Summary

Problems solved by technology

[0002] Under severe weather conditions such as rain, fog, and haze, the efficiency of the existing airborne runway scene image observation system is greatly reduced

Method used

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  • A Space Synchronization Method for Bistatic SAR Imaging System for Aircraft Landing
  • A Space Synchronization Method for Bistatic SAR Imaging System for Aircraft Landing
  • A Space Synchronization Method for Bistatic SAR Imaging System for Aircraft Landing

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Embodiment Construction

[0014] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] The specific application of the present invention is based on such as figure 1 In the scene shown, there is an elevated track parallel to the airport runway near the airport runway. The radar wave transmitter in the bistatic SAR imaging system is installed on the elevated track. For the aircraft that needs to be guided, the bistatic SAR imaging system is installed on the aircraft In the radar wave receiver, the basic principle of bistatic SAR imaging is that after the radar wave emitted by the transmitter is reflected on the runway, the reflected wave can be received by the receiver on the aircraft, and the SAR image of the runway can be calculated according to the reflected wave.

[0016] Bistatic SAR imaging system space synchronization method of the present invention, comprises the steps:

[0017] With GPS as the position...

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Abstract

A method for space synchronization of a bistatic SAR imaging system for aircraft landing, step 1. Read the coordinate position information of the transmitter and receiver in real time, establish a rectangular coordinate system with any point on the central axis of the runway as the origin, and convert the coordinate position information is the absolute coordinate value of the Cartesian coordinate system; step 2. Calculate each angle according to the absolute coordinate value obtained in step 1, adjust the transmitting angle on the vertical direction of the transmitter beam, and the transmitting angle on the horizontal direction of the transmitter beam; adjust the receiving angle of the receiver Angle: Calculate the above-mentioned angles according to the absolute coordinate values ​​obtained in step 1. By adopting the space synchronization method of the bistatic SAR imaging system of the present invention, the beam alignment requirements of the bistatic SAR imaging transceiver platform during the whole process of aircraft landing can be met, and high-precision SAR imaging can be realized.

Description

technical field [0001] The invention belongs to the field of electronic technology and relates to aircraft navigation technology, in particular to a space synchronization method for a bi-base SAR imaging system used for aircraft landing. Background technique [0002] Under severe weather conditions such as rain, fog, and haze, the efficiency of the existing airborne runway scene image observation system is greatly reduced. Bistatic SAR imaging technology utilizes the penetration of radar waves to complete aircraft forward-looking imaging under this condition, providing all-weather image observation capabilities for aircraft to land safely under severe weather conditions. [0003] The aircraft landing system based on bistatic SAR technology requires that the radar wave transmitting platform and receiving platform have good spatial synchronization. A radar with larger equivalent antenna aperture is synthesized by means of data processing. Synthetic aperture radar is characte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90G01S7/40
CPCG01S7/40G01S13/904G01S13/9058
Inventor 金敏汪宗福胥秋王驰张平何东
Owner 成都汇蓉国科微系统技术有限公司
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