A wireless target detection method and system based on ultra-wideband technology

Abstract

The invention discloses a wireless target detection method and system based on an ultra wideband technology, and belongs to the field of wireless location. The method comprises the steps that clock synchronization is carried out on a ground control station and locating stations; the control station sends a starting locating instruction to a target zone airspace through a 2.4 GHz wireless communication channel; a beacon bullet sends UWB pulse sequence coded signals; the locating stations recognize identification of the beacon bullet according to UWB codes, and determine the time when the UWB coded signals reach the locating stations; the control station subtracts the time when the UWB coded signals reach the different locating stations to obtain a group of arrival time delay differences required by a time-difference localization algorithm; and the beacon bullet is accurately located through utilizing the time-difference localization algorithm according to the time delay differences. According to the method, the locating accuracy is high, the stability is good, and the simultaneous and accurate locating requirement on miss distances of bullets in bullet flow under multi-barrel and multi-vessel volley can be met.

Description

technical field [0001] The present invention relates to the field of wireless positioning, more specifically, to a wireless target detection method and system based on ultra-wideband technology. Background technique [0002] At present, the detection of the amount of misses in the shooting training of large-caliber naval guns in our army is generally done manually, which consumes a lot of manpower and material resources, and the detection is slow, inefficient, and subjectivity. In order to solve this problem, it is urgent to build an automatic target detection system. , realize the automatic and accurate measurement of the amount of misses, the real-time display of the impact point distribution, and the online evaluation of shooting performance, so as to guide the troops to carry out scientific and effective training and improve combat effectiveness. The positioning technology based on sensors such as optics / acoustics [1], GPS [2] and radar [3] is usually used for ballistic ...

AI Technical Summary

Problems solved by technology

Among them, the accuracy of optical / acoustic sensors is 1-3m, which is easily affected by environmental factors such as atmosphere and noise, and has weak anti-interference; the accuracy of GPS is less than 1m, and the coverage area is large, but it needs a long start-up preparation process such as satellite search , is not conducive to the high-speed flight positioning of the projectile, the real-time measurement is low, and it is difficult to install on the projectile due to its large size; the radar accuracy is 1-5m, and it is easy to overcome the influence of low-altitude clutter, and the resolution is high, but it is susceptible to Influenced by the characteristics of the target, and the radar cannot effectively distinguish and record when multiple bombs are launched simultaneously

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