The system uses the emitter to send ultra high frequency signals after coding with signalcoder and the secondary superheterodyne mixing receiver to accept the moving target signals.
系统中发射器采用编码器编码后发送超高频信号，接收器采用二次混频型超外差式接收移动目标信号。
2
Coder, decoder its method, data processing system, memory medium and signal.
编码装置、解码装置及方法，数据处理系统，存储介质及信号。
3
Furthermore, the analysis of the vibration provides an basis for dealing with the distortion signal of the Angle coder of the pendulum apparatus.