Three-dimensional Coordinate Positioning Principle Of Aerial Blast Point

Under the influence of the rapid development of modern science and technology, national defense construction with scientific research is also continuous progress. In order to measure the impact of a certain weapon system, the location of the burst point is required, accurate positioning can directly reflect the combat effectiveness of the weapon, so it is very important to seek the method of three in the air.Aiming at the problem that the positioning accuracy of passive acoustic localization algorithm is influenced by wind speed, temperature, humidity and other factors, a passive optical positioning algorithm based on timedifference is proposed to overcome the influence of these factors; Time delay of a plane cross array technology is easy to introduce blind spot area, a five element solid array positioning model based on time delay is proposed and the positioning accuracy is improved; In this paper, the geometric relations and parameters of the array elements of the three-dimensional array of five elements are studied; using the knowledge of spatial geometry and the cosine theorem, the calculating formula of target location is derived; according to the error theory, the error analysis is carried out. Innovatively designed the time synchronization technology, the real-time positioning can be realized by using the fire signal as the trigger signal, after the calibration of each subsystem, the hardware reaction time is eliminated, and the system error is avoided.By overcoming the positioning model and algorithm design, optical signal processing, time synchronization, super high precision timing and other key problems, through many simulation and experiment debugging, the positioning system can meet the technical requirements of the aerial blast point positioning, and have high anti-jamming performance and positioning accuracy.The experimental results show that, the passive optical positioning technology used in this paper is feasible, and the positioning system can overcome the influence of passive acoustic localization accuracy is affected by environmental temperature, humidity, wind speed, noise, to meet the certain measuring condition can ensure better measurement precision.