【摘要】：針對多站外輻射源定位系統(tǒng)復雜度高問題,提出了一種單站外輻射時差(TDOA)定位算法。該算法利用兩次最大似然估計算法分步解相關(guān)得到目標的精確位置。仿真結(jié)果表明,時差誤差較小時,估計的均方誤差(MSE)接近CRLB,隨著目標遠離觀測站,定位誤差隨之增大,目標距離地面的高度越低,z軸的估計誤差越大。該方法利用單站接收目標的多個信號時差信息進行定位,能夠克服多站定位中時間同步困難等問題。
[Abstract]:In order to solve the problem of high complexity of multi-station external radiation source positioning system, a single station external radiation time difference (TDOA) location algorithm is proposed. In this algorithm, the exact position of the target is obtained by solving the correlation step by using the twice maximum likelihood estimation algorithm. The simulation results show that when the time difference error is small, the estimated mean square error (MSE) is close to CRLB,. With the target away from the observation station, the positioning error increases. The lower the height of the target from the ground, the greater the estimation error of z axis. This method uses multiple signal time difference information of a single station to receive a target to locate, which can overcome the difficulty of time synchronization in multi-station positioning.
【作者單位】： 鄭州升達經(jīng)貿(mào)管理學院;洛陽電子裝備試驗中心;
【基金】：國家自然科學青年基金項目資助(61401469)
【分類號】：TN95
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本文編號：2524516