Joint treatment method and system of static scene and moving object based on satellite-borne MIMO-SAR

A MIMO-SAR, moving target technology, used in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc. Widen the scope and quality, effective detection, timely grasp of the effect
CN101762816AInactive Publication Date: 2010-06-30TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a joint treatment method and a system of a static scene and a moving object based on satellite-borne MIMO-SAR, which relates to the technical field of radars. The method comprises the following steps of: receiving echo data, and carrying out signal sorting on the echo of each receiving array element by utilizing the orthogonality of a transmit signal; eliminating the influence of the phase error in an echo signal on azimuth imaging by equivalent phase center error compensation; carrying out data combination and reconstruction on each equivalent phase center error compensated channel signal to obtain multichannel echo data; realizing the high-resolution wide-swath imaging of a static scene by utilizing one of reconstructed multichannel data, and meanwhile, realizing the detection and the imaging on a moving object in a wide swath by utilizing the joint treatment of each channel data. The invention can improve and broaden the range and the quality of satellite-borne synthetic-aperture radar reconnaissance and monitoring by the wide swath and high resolution and can effectively and simultaneously detect and trace the key moving object in the wide swath, thereby providing the guarantee of comprehensively and timely mastering radar detection information.
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Description

technical field

[0001] The present invention relates to the field of radar technology, and more specifically, the present invention relates to a joint processing method and system for static scene imaging and moving target detection and imaging based on spaceborne multiple-input multiple-output synthetic aperture radar (MIMO-SAR). Background technique

[0002] As an all-time, all-weather, wide-range, high-resolution sensor, spaceborne synthetic aperture radar (SAR) has been widely used in many fields such as remote sensing, early warning, reconnaissance, and warning.

[0003] However, in traditional single-channel spaceborne SAR, the azimuth resolution and mapping bandwidth are contradictory and restrict each other. To this end, the existing solutions usually use Multiple Phase Centers SAR (Multiple Phase Centers SAR, MPC-SAR), using one transmitting array element and multiple receiving array elements, and replacing time sampling with multiple spatial sampling to reduce the ...

Claims

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