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Signal compensation method and device, equipment and storage medium

A signal compensation and echo signal technology, applied in the field of signal processing, can solve problems such as time delay and phase deviation, imaging result defocus, distance error, etc., and achieve the effect of eliminating the influence of time delay and phase

Pending Publication Date: 2021-02-19
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

When designing the MSAR system, according to the application requirements, the carrier aircraft needs to maintain a constant speed and straight flight, but due to the influence of unpredictable factors such as atmospheric disturbance and wind shear, the position deviation or attitude rotation of the radar is caused, resulting in distance errors and position errors. This causes time delay and phase deviation between the echoes received by different receiving antennas of MSAR, making the final imaging result defocused

Method used

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  • Signal compensation method and device, equipment and storage medium
  • Signal compensation method and device, equipment and storage medium
  • Signal compensation method and device, equipment and storage medium

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Here, an airborne multi-channel synthetic aperture radar (Multi-channel Synthetic Aperture Radar, MSAR) is briefly described. MSAR is a high-resolution imaging radar that can obtain high-resolution radar images similar to optical photography under weather conditions with extremely low visibility. The airborne MSAR measures the distance and performs two-dimensional imaging according to the movement track of the aircraft, and its two-dimensional coordinate information is the distance information and the orientation information perpendicular to the distance. During the design of airborne MSAR, according to the application requirements, the carrier aircraft needs to maintain a constant speed and straight flight, but due to the influence of unpredictable factors such as atmospheric disturbance and wind shear, the position deviation or attitu...

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Abstract

The embodiment of the invention discloses a signal compensation method, and the method comprises the steps: obtaining the operation posture information and the actual position information of a radar,correcting the actual position information according to the operation posture information, and obtaining the target position information of the radar; determining actual distance information between the radar and the target, and determining target distance information between the radar and the target according to the actual distance information and the target position information; and performing compensation processing on the echo signal received by the radar according to the target distance information to obtain a compensated echo signal.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a signal compensation method, device, equipment, and storage medium. Background technique [0002] As an active imaging system, airborne multi-channel synthetic aperture radar (Muti-channel Synthetic Aperture Radar, MSAR) has the characteristics of all-day, all-weather and high-resolution imaging. When designing the MSAR system, according to the application requirements, the carrier aircraft needs to maintain a constant speed and straight flight, but due to the influence of unpredictable factors such as atmospheric disturbance and wind shear, the position deviation or attitude rotation of the radar is caused, resulting in distance errors and position errors. This causes time delay and phase deviation between the echoes received by different receiving antennas of the MSAR, making the final imaging result defocused. Contents of the invention [0003] In view of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/90
CPCG01S7/40G01S13/904
Inventor 陈圳张志敏邱劲松周亚石
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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