Design of real-time measurement and processing software of radar signal parameters
Xiaobao Wu · Modern Electronics Technique · 2013
Verilog,a hardware description language,is used to detect and process parameters of signal at multiple bands of radar simulation radiation source on FPGA,including realization of digital down conversion(DDC),real-time signal parame ters measurement,real-time data transmission and so on.Digital receiver carries out digital down conversion of broadband and intermediate and high frequencey signals to get orthogonal baseband signals.CORDIC algorithm is used to calculate phase,and then the signal frequency parameter is determined by utilizing the direct phase difference method.The results of time-of-arrival(TOA)of pulse width and pulse are obtained by the counter method.Finally,the measured parameters are packaged to form pulse description words(PDW)which are uploaded in real-time manner.The software has been applied and verified in a cer tain radar product.