Binocular High Precision Wide Band Laser Warning System Based on FPGA
Aiming at the problems of large err in extracting the center of light spot,poor measurement accuracy of angle and low resolution of traditional two-dimensional laser warning systems,a high-precision wide-band laser warning system based on FPGA and InGaAs focal plane array detectors is designed,and the traditional Otsu(maximum inter-class variance method)threshold segmenta-tion algorithm is derived and optimized.Based on the improved algorithm,the center coordinates of spot are extracted,the parameters such as azimuth angle and pitch angle are calculated by FPGA,and the results are transmitted to the upper computer for real-time mo-nitoring.Experimental results show that compared with traditional threshold segmentation algorithms,the spot center extraction ac-curacy of the improved Otsu algorithm reaches 0.06 pixels,the average angle measurement error of the improved laser alarm system is 0.03°,and the angle resolution reaches 0.05°,the binocular high precision wide band laser warning system meets the requirements of practical application,improves the angular resolution and accuracy of the system measurement,and has a certain significance for the work in the field of photoelectric detection and laser warning.
two-dimensional laser warningOtsuFPGAspot center extractionphotoelectric detection
万方数据
维普
