Small size antenna array aperture expanding and space signal processing method
A small antenna and signal processing technology, applied in antenna arrays, antennas, space transmit diversity, etc., can solve problems such as difficulty in finding a large antenna array antenna site, increased radar station construction costs and maintenance costs, radar system calibration difficulties, etc., to overcome signal Effects of blurring, reducing the number of antenna elements and receiving channels, and improving the decoherence capability
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[0031] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.
[0032] In order to achieve the above object, the present invention adopts an arbitrary antenna array aperture expansion and space super-resolution method, and the antenna array is set in an arbitrary array form; the entire antenna scanning area is divided into several areas, and then a certain sub-area is subdivided; through actual The relationship between the array manifold A and the extended array manifold A, obtain the array extended transformation matrix B = AA -1 ; Use the obtained array extension matrix to reconstruct the signal Z=BX of the extended array antenna (where X is the signal received by the original antenna array); perform beamforming on the data Z received by the reconstructed extended array, or use spatial high resolution The algorithm calculates the spatial super-resolution angle of arrival of the signal.
[0033] 1. Original...
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