Radar echo simulating method and radar echo signal simulator

A radar echo simulation and signal simulator technology, applied in the field of computer simulation, can solve problems such as analog echo distortion
CN104698445AActive Publication Date: 2015-06-10BEIJING RUNKE GENERAL TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
BEIJING RUNKE GENERAL TECH
Publication Date
2015-06-10

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Abstract

The invention provides a radar echo simulating method and a radar echo signal simulator. The method comprises the steps of receiving a radar emission signal through a controller; respectively performing first delay processing for each PRF in the radar emission signal through a first storing device, and generating and outputting an emission delay signal; respectively performing second delay processing for each modulation information data in modulation signal through a second storing device, and generating and outputting a modulation delay signal; enabling the pulse drop edge of each modulation information data in the modulation delay signal to be in front of the pulse raise edge of the PRF corresponding to each modulation information data, so as to ensure matching and aligning; performing convolution operation for the emission delay signal and the modulation delay information through the controller, and generating and outputting a radar echo simulating signal; delaying and modulating the radar emission signal. With the adoption of the method, the problem of simulating echo distortion can be avoided.
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Description

technical field

[0001] The invention relates to the technical field of computer simulation, in particular to a radar echo simulation method and a radar echo signal simulator. Background technique

[0002] Synthetic Aperture Radar (SAR) is a modern high-resolution microwave imaging radar. The evaluation and testing of various performance indicators of SAR usually use simulation methods, and the radar echo signal simulator is based on the current SAR position information. Real-time simulation of the echo data of all target points within the irradiation range of the radar beam, instead of the real echo data obtained by the SAR aircraft test flight, so as to reduce the test cost and test time.

[0003] However, compared with conventional system radars, SAR, especially spaceborne SAR, has the characteristics of long distance from the target and fast moving speed in orbit. figure 1 Shown is the change law of the distance between a certain stationary ground point target A and the ...

Claims

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