Motive target imaging method of synthetic aperture radar |
Title： |
| Motive target imaging method of synthetic aperture radar |
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Application Number： |
200510076603 |
Application Date： |
2005/06/10 |
Announcement Date： |
2006/05/10 |
Pub. Date： |
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Publication Number： |
1769925 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01S 13/90, G01S 7/02 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Xu Jia, Peng Yingning, Wang Xiutan, Li Gang, Li Jun, Zhang Weijie |
Key Words： |
synthetic aperture radar, motive target, imaging method |
Abstract： |
The invention relates to a synthetic aperture radar motion object imaging method which comprises steps of: 1. impulse sampling for each impulse to compress distance; 2. performing FFT on each impulse sampling between coherent treating spaces and make them enter into orientation frequency domain, judging output of each frequency channel to get instantaneous amplitude, slant range and Doppler frequency shift as the properties set of motion objects; 3. aggregating mass center; 4. tracking mass center dot trace; 5. getting Doppler parameters and distance migration sequence of motion object; 6. correcting distance migration; 7. orientation focus; 8. accurately indicating focusing motion object image. The invention has the advantages of being able to take advantages of detecting dot trace information to realize motion object data block in the division of whole data block, and of being able to realize the separately detecting, tracing and imaging for multiple motion objects. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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