發(fā)布時間：2018-04-27 01:16

  本文選題：干擾源定位 + 多普勒頻率　； 參考：《信號處理》2014年02期

【摘要】：民航地空通信受到無線電干擾會嚴重危機民航飛機的正常飛行。本文在深入研究地面干擾源定位問題的背景下,提出基于分數(shù)階模糊函數(shù)的飛機動態(tài)跟蹤算法。首先提出一個新的回波信號模型,通過搜索分數(shù)階模糊函數(shù)的峰值點,實現(xiàn)了對多普勒頻率的瞬時估計,并提出基于分數(shù)階模糊函數(shù)的投影近似子空間角度跟蹤算法(FAF-PAST),實現(xiàn)了2維發(fā)射角和2維接收角的聯(lián)合動態(tài)遞推估計。接下來根據(jù)陣列模型圖中的幾何關(guān)系,推導出了飛機的運動速度及三維位置坐標,從而實現(xiàn)飛機目標的動態(tài)跟蹤,為后續(xù)地面干擾源定位打下良好的基礎(chǔ)。仿真結(jié)果表明了該文提出的模型和算法的正確性和可行性。
[Abstract]:The radio interference of civil aviation ground-air communication will seriously endanger the normal flight of civil aviation aircraft. In this paper, an aircraft dynamic tracking algorithm based on fractional ambiguity function is proposed under the background of ground interference source location. First, a new echo signal model is proposed. By searching the peak point of fractional ambiguity function, the instantaneous estimation of Doppler frequency is realized. A projection approximation subspace angle tracking algorithm based on fractional ambiguity function is proposed, which realizes the joint dynamic recursive estimation of 2-D emission angle and 2-D receiving angle. Then according to the geometric relation in the array model diagram, the motion velocity and three-dimensional position coordinates of the aircraft are deduced, which can realize the dynamic tracking of the aircraft target and lay a good foundation for the subsequent ground interference source location. Simulation results show the correctness and feasibility of the proposed model and algorithm.
【作者單位】： 大連理工大學電子信息與電氣工程學部;大連大學信息工程學院;
【基金】：國家自然科學基金資助項目(61172108,61139001,81241059) 國家科技支撐計劃項目(2012BAJ8B06)
【分類號】：TN958

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本文編號：1808529