Moving Target Detection System Based on Distributed Synthetic Aperture Radar

A synthetic aperture radar, moving target detection technology, applied in the field of radar, can solve the problem that moving targets cannot be effectively detected
CN110456349BActive Publication Date: 2021-07-06SPACETY CO LTD (CHANGSHA)
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SPACETY CO LTD (CHANGSHA)
Publication Date
2021-07-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a moving target detection system based on a distributed synthetic aperture radar, comprising at least one main star and at least one auxiliary star with the synthetic aperture radar as a payload, the system also includes a clutter suppression module arranged on the main / auxiliary star and A pulse transmission module, the main star transmits signals through the pulse transmission module, and the clutter suppression module maximizes the signal noise of the output signal after reconstructing and generating a virtual uniform sampling signal based on the echo signal signal reconstructor returned by the transmission signal ratio, and after obtaining the velocity information of the moving target in the echo signal, adjust the period of the pulse emission module so that the generated clutter equivalent radial velocity falls outside the preset range of the moving target velocity. The present invention can use the space-time adaptive processing technology to suppress the non-stationary clutter while setting the period of the pulse repetition period signal to avoid the moving target signal from being eliminated in the process of suppressing the clutter by the space-time adaptive processing technology, thereby reducing detection probability of failure.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of radar, in particular to a moving target detection system based on distributed synthetic aperture radar. Background technique

[0002] Synthetic Aperture Radar (Synthetic Aperture Radar) ground moving target monitoring technology can image the observation scene with high resolution and at the same time complete the detection and positioning of ground targets. It is widely used in the fields of urban traffic monitoring and military reconnaissance and early warning.

[0003] At present, the research on ground moving target detection technology of synthetic aperture radar is mainly divided into three categories: amplitude monitoring, phase monitoring and amplitude-phase joint detection. Amplitude detection is to use the amplitude information of the synthetic aperture radar image after adaptive clutter suppression to detect the target. Phase detection is mainly to perform interference processing on the synthe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More