一种主字母体制安控指令检测采样优化方法

A Sampling Optimization Method for High Alphabet System Safety Control Instruction Detection

摘要:

针对工程实现中主字母体制安控系统的指令实时检测性能受采样方案影响较大的问题,通过对单音信号频率、检测采样频率和采样点数的合理选择,提出了一种指令检测的采样优化实现方案。仿真实验结果表明,通过对采样方案的优化,在固定多普勒频偏和可变多普勒频偏情况下,可以最低采样点数实现指令可靠检测,便于利用 FPGA实现实时处理。

Abstract:

Instruction detection performance of the high alphabet safety control system was greatly affected by the samplingrate. Based on the selection of tone signal frequency, sampling frequency and the number of sampling points, a samplingoptimization and implementation scheme was presented. Simulation results show that reliable detection result can beachieved using minimum sampling points with fixed and variable Doppler frequency offset, and it is convenient for realtime processing using FPGA.