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The Slow Speed Target Single Airborne Observer of High Precision and Fast Passive Location Technology

Author: XuBoZuo
Tutor: YangHongChun; ZuoHongJie
School: University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: single-observer passive location location precision phase differencerate vector accumulation data filtering
CLC: TN95
Type: Master's thesis
Year: 2012
Downloads: 2
Quote: 0
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Abstract


Passive detection system because of its oneself not radiate electromagnetic waves,has a far distance, strong concealment, the passive method to carry on the workcharacteristics of attention. In response to air detection platform on land (sea) sideremote slow moving target location and tracking problem, existing passive detectionand location tracking technology has low positioning precision, slow defects, difficult tomeet the needs of the location, there are two main reasons: one is the receiving systemin low precision, less information is available; two single station passive location speed,low precision. In this paper the method to improve the accuracy of vector accumulationreceiver based on the acquisition of target information, and then through the filteralgorithm to improve the data precision of phase difference rate of change. This paperfocuses on the receiver system precision vector accumulation key technology and a newmethod based on phase difference rate of change of single station passive locationtechnology, the combination of hardware and software of the high speed and highprecision positioning method will become the future passive positioning technology inone direction and development trend.Finally, based on phase difference rate of change and the particle filter algorithmcombining method, influence on the static target and slow moving target positioningaccuracy of the multiple factors were analyzed and verified, is presented for differentconditions of geometric positioning accuracy distribution. After the system test andsimulation data verification, the results show that the object is a single station passivelocation and tracking, positioning precision and tracking speed compared with theoriginal system were also increased to a certain extent, to meet the needs of.

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