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本文分析了最大熵方法的特点和准连续波体制原理,提出了用于雷达接收机系统的最大熵谱预测外推算法的选择依据,设计实现了以TMS320C31为主芯片的核心外推运算单元,完成了对最大熵谱预测外推电路的实时监控。信号传输速率达到40Mb/s,当定义外推算法为8阶时,数据吞吐量达到1Mb/s。本文所做工作对准连续波雷达走向实际应用具有较大意义。
In this paper, the characteristics of maximum entropy method and the principle of quasi-continuous wave system are analyzed. The selection basis of the maximum entropy spectrum prediction extrapolation algorithm for radar receiver system is proposed, and the core extrapolation arithmetic unit based on TMS320C31 is designed and implemented. Completed the maximum entropy spectrum prediction extrapolation circuit real-time monitoring. The signal transmission rate reaches 40Mb / s, when the extrapolation algorithm is defined as 8th order, the data throughput reaches 1Mb / s. The work done in this paper is of great significance to the practical application of CW radar.