Method for calculating trace point density in radar area based on FPGA

The invention provides a method for calculating a trace point density in a radar area based on an FPGA. The method comprises the steps of: establishing a trace point storage unit, a trace point numbercalculation unit and a trace point density state output unit. The FPGA internal storage resources are used for counting the trace point number after radar detection within 128 * 128 ( the number of distance units * the number of radar triggers) in front of each distance unit in real time, and the trace point density condition of the located area is judged by threshold setting. The trace point storage unit completes the function of storing trace point data after historical detection, and storing the trace point data of previous 128 triggers before the current trigger for calculating the tracepoint number. The main function of the trace point number calculation unit is to calculate the trace point number within the current 128 * 128 area in real time through the trace points after the historical detection and the c