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雷达运动目标检测方法研究-知网毕业论文

摘要 : y (FDA) refers to a type of phased array radar with a frequency increment between adjacent elements, which carries distance information. The combination of FDA radar and Multiple Input Multiple Output (MIMO) technology forms the concept of FDA-MIMO radar. Moving target detection has always been a focus of radar research. Therefore, this paper focuses on the research of moving target detection using FDA-MIMO radar, including constant-speed target detection, high-speed target detection, and target velocity ambiguity resolution method. The main contents are summarized as follows: (1) The transmission signal model and echo signal model based on FDA-MIMO radar are derived, and compared with the conventional waveform diversity MIMO radar to analyze their differences. (2) Under the premise of neglecting the influence of frequency increment on signal Doppler shift, the constant-speed target detection method based on FDA-MIMO radar is studied. The generalized likelihood ratio detector under the condition of with and without auxiliary data is derived, and the estimation of the initial distance, velocity, and azimuth of the moving target is realized. Simulation results show that the performance of target detection and parameter estimation with auxiliary data is usually better than that without auxiliary data. (3) The high-speed target detection method based on FDA-MIMO radar is studied. After the range migration correction using Keyston transform, a time-domain resampling method combined with generalized likelihood ratio is proposed to reduce the influence of frequency
雷达运动目标检测方法研究-知网毕业论文
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