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.
CN107942332BActive Publication Date: 2018-09-18成都汇蓉国科微系统技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
成都汇蓉国科微系统技术有限公司
Publication Date
2018-09-18

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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.
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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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