发明名称 |
Apparatus and method for producing three-dimensional images |
摘要 |
An apparatus and method is capable of acquiring useful three-dimensional radar images from an aircraft which travels in a curvilinear path to generate only a sparsely filled synthetic array. A motion measurement unit outputs position measurements as the aircraft travels in the curvilinear path. The system includes a motion compensation and timing unit and a wave transmitter which outputs chirped radar signals. An antenna coupled to the wave generator sends the chirped radar signals to a region to be imaged and receives scattered chirped radar return signals from scatterers in the region. These scattered signals are coherently mixed to baseband and digitized before being input to a processor. The processor includes a range processing unit, a memory unit and an estimator. The range processor receives and Fourier transforms the digitized return signals to obtain range profiles. The estimator completes the image formation process by three-dimensional back projection of the range profiles. It also estimates the location and complex strengths of scatterers and uses these to generate a side lobe free image.
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申请公布号 |
US5394151(A) |
申请公布日期 |
1995.02.28 |
申请号 |
US19930129499 |
申请日期 |
1993.09.30 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
KNAELL, KENNETH K.;HEIDBREDER, GLEN R. |
分类号 |
G01S7/40;G01S13/28;G01S13/90;(IPC1-7):G01S13/90 |
主分类号 |
G01S7/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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