Method for improving ranging precision of radar based on Gaussian interpolation
A radar ranging and precision technology, applied in the field of Gaussian interpolation, can solve problems such as increased computation, reduced ranging accuracy, and waste of time and resources, and achieve the goals of reducing quantization errors, improving radar ranging accuracy, and reducing calculations Effect
Pending Publication Date: 2021-03-09
CNGC INST NO 206 OF CHINA ARMS IND GRP
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The invention relates to a method for improving the ranging precision of a radar based on Gaussian interpolation, and belongs to the technical field of pulse method radar ranging. Based on prior information, on the premise that a sampling rate, a bandwidth and a window function are selected and noise is not added firstly, when a high reference sampling rate is selected to fit an echo pulse pressure result of a 3dB beam width into a Gaussian distribution function, only sampling points with a maximum value and a second maximum value are taken from the echo pulse pressure result, the sampling time is normalized into a sampling time unit by using a real sampling rate, Gaussian interpolation processing can be performed according to a variance value obtained by prior information to estimate a mean value of the fitted Gaussian distribution function, namely the sampling time unit where an echo peak value appears, the echo peak value time can be obtained through simple calculation and conversion, and therefore, the purpose of reducing the distance quantization error is achieved. Simulation results show that the method can significantly improve the ranging precision of a radar.
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