Efficient three-dimensional imaging method of broadband monopulse radar
A single-pulse radar and three-dimensional imaging technology, which is applied in the direction of radio wave reflection/re-radiation, utilization of re-radiation, and measurement devices, can solve the problems of complex imaging processing and low efficiency, so as to improve efficiency and avoid signal processing operations Effect
Inactive Publication Date: 2013-02-27
BEIHANG UNIV
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[0004] Therefore, the imaging processing process of the sea surface ship target with complex motion in the existing technology is complex and inefficient
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[0019] figure 1 It is a flow chart of Embodiment 1 of the three-dimensional imaging method for wideband monopulse radar of the present invention. The method is suitable for processing the signal received by the wideband monopulse radar to form a three-dimensional image of the target under the monopulse radar, and is especially suitable for imaging dynamic targets, such as ships at sea. For the sake of clarity, this article will take the ship as the target as an example to illustrate the implementation process. The method can be performed by a server or a controller with data processing capabilities, such as figure 1 As shown, the method of this embodiment may include:
[0020] S101. From the sum channel echo signal and the difference channel echo signal received by the broadband monopulse radar, respectively select the pulse signals of the target at different sampling times in multiple frames;
[0021] Wherein, the difference channel echo signal includes an azimuth differen...
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The invention provides an efficient three-dimensional imaging method of a broadband monopulse radar. The method includes selecting pulse signals of a target in multiframe different sampling instants respectively from a sum channel echo signal and a difference channel echo signal received by the broadband monopulse radar; subjecting each frame of pulse signal to pulse compression treatment respectively to obtain one-dimensional high resolution range profiles of the target at different sampling instants; subjecting each frame of one-dimensional high resolution range profile to monopulse three-dimensional imaging of the target respectively to obtain three-dimensional images of the target under radar coordinate system at different sampling instants; converting the three-dimensional images of the target under the radar coordination system corresponding to each frame to a unified reference coordinate system; and combining the three-dimensional images of the frames of the target to form a final three-dimensional image of the target. The provided target three-dimensional imaging method can improve the efficiency of the monopulse radar three-dimensional imaging processing.
Description
technical field [0001] Embodiments of the present invention relate to image data processing technology, in particular to an efficient three-dimensional imaging method for wideband monopulse radar. Background technique [0002] Obtaining high-resolution radar images of targets through Synthetic Aperture Radar (SAR) or Inverse Synthetic Aperture Radar (ISAR) is an effective means of target recognition. Sea surface ship targets are usually in a sailing state, and are driven by waves, and there are six degrees of freedom, namely roll, pitch, yaw, sway, surge, and heave. Therefore, sea ship targets have complex Sporty features. The images of moving ship targets acquired by SAR or ISAR are often difficult to reflect the true form of target scattering. In some short-distance radar detection, imaging and recognition applications, the one-dimensional distance high-resolution and two-dimensional angle measurement capabilities of wideband monopulse radar are used to perform three-dim...
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Inventor 刁桂杰许小剑
Owner BEIHANG UNIV