In response to the demand for monopulse rapid direction finding in the phased array sys-tem equipment,a real-time amplitude comparison direction finding method is designed based on beam amplitude presorting.Based on the FPGA hardware platform,the beam amplitude modulus is firstly estimated and presorted,and then the beam amplitude difference is quantified and addressed.Finally,the direction finding azimuth of the target signal is output.This method can greatly reduce the consumption of FPGA hardware logic resources while improving the data processing rate.The real-time direction finding azimuth output of the target signal is less than 20 μs,and the mean square error of the direction finding accuracy is less than 0.3°.
关键词
实时测向/预分选/波束幅度/FPGA/信号检测
Key words
real-time direction finding/presorting/beam amplitude/FPGA/signal detection
维普
万方数据