High Precision Wide Open To The Methods Of Research And Engineering Than The Rate Measured

Focusing on the tactical index of EW system-bearing accuracy, this article makes deep-through analysis, comparison and study of the theory basis for traditional direction finding method. A 16-channel monopulse amplitude-comparison direction finding method and new phase-delay estimating method has been proposed to use, through computer's analog computation and relative measures in actual engineering practices, the bearing accuracy of traditional method has been increased and the service requirement of the EW weapon system and adaptability of equipment satisfied.The electronic warfare is a kind of special but important mode of operations. The technique of electronic warfare contains electronic reconnaissance, electronic jamming, electronic warfare destroying and stealth etc.. The electronic reconnaissance is an important means for military information, and also a prerequisite to conduct electronic jamming and EW destroying. The direction finding is an important index of electronic reconnaissance.The methods of direction finding mainly include maximum (minimum) signal method, amplitude-comparison method, phase-comparison method and time difference method. As a traditional method, the phase-comparison method has a merit of low cost but a demerit of poor bearing accuracy. So, deep-through analysis of the phase-comparison method and adoption of new evaluation methods is to be done to increase the bearing accuracy and achieve the best price performance, satisfying the equipment requirement of Navy.To increase the bearing accuracy of amplitude-comparison, the multi-channel system was chosen, the angle of reaching of moving antenna pattern serial was estimated from the frequency domain using the phase-delay estimating method, and at the same time, the selection of antenna, quantization of signal and touch switches were optimized in concrete engineering practice, and so the requirement of the index was satisfied.After analysis and deduction, computer analog and performance index test of prototype, the results show that the amplitude-comparison method can completely satisfy the last requirement of equipment. The study of the high accurate and wide amplitude-comparison direction-finding method and engineering practice explore a cost-effective way for our Navy's development.