Hardware And Software Implementation Of Radar Jamming Effectiveness Evaluation Receiver

The jamming effectiveness evaluation is qualitative and quantitative analysis after concerning electronic jamming on radar.It is a very important comprehensive indicator to measure the performance of the radar jamming equipment.It needs to extract the feature parameters of radar jamming signal,and then do the mathematical analysis based on these information.Receiving scrambled radar signals require high sensitivity and resolution,wide-bandwidth input capability,large dynamic range.Radar jamming effectiveness evaluation system includes antenna,microwave front-end,evaluation board and PC software.The jamming effectiveness evaluation receiver is required to receive the IF signal,which is the scrambled radar signal after frequency converting,amplifying,filtering by microwave front-end.Complete the hardware selection and circuit design of radar's jamming effect evaluation receiver system based on FPGA and DSP.Make research on the instantaneous characteristic parameters extracting of signal based on CORDIC and and make a detailed description about the method to extract signals' instantaneous amplitude,phase,frequency,pulse width and bandwidth.First use the A/D chip to complete the analog to digital conversion,then put the sampling data to the signal processing of FPGA and DSP system.By the using of the figures orthogonal frequency conversion technology,digital filter,CORDIC algorithm to obtain the frequency,phase,pulse width,power,timing and other parameters of the target signal.Then the processed results is sent to the PC through the serial port,and finally the estimation of jamming effectiveness is obtained by computing processed the parameters.