基于虛擬時(shí)差的運(yùn)動(dòng)陣列空間無(wú)源定位算法
doi: 10.11999/JEIT160860
基金項(xiàng)目:
陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃項(xiàng)目(2013JQ8020)
A Passive Location Algorithm Based on the Virtual TDOAs of Moving Array
Funds:
Natural Scientific Fundamental Research Project of Shanxi Province of China (2013JQ8020)
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摘要: 針對(duì)脈沖骨架周期固定的雷達(dá)脈沖信號(hào)輻射源無(wú)源定位問(wèn)題，該文提出一種基于虛擬時(shí)差的運(yùn)動(dòng)陣列空間無(wú)源定位算法，采用運(yùn)動(dòng)單陣列接收目標(biāo)輻射源信號(hào)，通過(guò)多次測(cè)量偵察站不同位置的脈沖到達(dá)時(shí)間來(lái)估計(jì)目標(biāo)輻射源位置。分別針對(duì)脈沖骨架周期已知和未知兩種情況，提出了一種基于高階統(tǒng)計(jì)量的無(wú)源定位算法，并推導(dǎo)了不同情況下定位精度的克拉美羅界。仿真實(shí)驗(yàn)表明，不同情況下定位算法定位精度逼近克拉美羅界，且脈沖骨架周期已知時(shí)虛擬時(shí)差無(wú)源定位算法定位精度優(yōu)于同孔徑實(shí)陣列TDOA無(wú)源定位算法定位精度，脈沖骨架周期未知時(shí)虛擬時(shí)差無(wú)源定位算法定位精度低于同孔徑實(shí)陣列TDOA無(wú)源定位算法定位精度。
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關(guān)鍵詞:
- 無(wú)源定位 /
- 虛擬時(shí)差 /
- 運(yùn)動(dòng)陣列 /
- 克拉美羅界 /
- 高階統(tǒng)計(jì)量
Abstract: To solve the problem of passive location for the emitter with fixed Pulse Framework Cycle (PFC), a passive location algorithm based on virtual TDOAs of moving array is proposed. The signal is received by a moving single sensor. The position of emitter is estimated with the multiple measurements of pulse arrival time in different sensor locations. A passive location algorithm based on high-order statistics is proposed for pulse framework cycle known and unknown. The Cramer-Rao Lower Band (CRLB) is derived in the above two cases. The simulation results show that the location accuracy is close to CRLBs in different cases. When pulse framework cycle is known, the location accuracy of virtual TDOAs is better than the real aperture array. When pulse framework cycle is unknown, the location accuracy of virtual TDOAs is slightly lower than the real aperture array.-
Key words:
- Passive location /
- Virtual TDOAs /
- Moving array /
- Cramer-Rao Lower band /
- High-order statistics
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羅景青, 劉文山. 固定單站對(duì)運(yùn)動(dòng)輻射源無(wú)源定位的最小二乘估計(jì)算法[J]. 信號(hào)處理, 2000, 16(B12): 53-58. LUO Jingqing and LIU Wenshan. Passive location and tracking for moving emitters by single observer[J]. Signal Processing, 2000, 16(B12): 53-58. 郭福成, 賈興江, 皇甫堪. 僅用相位差變化率的機(jī)載單站無(wú)源定位方法及其誤差分析[J]. 航空學(xué)報(bào), 2009, 30(6): 1090-1095. GUO Fucheng, JIA Xingjiang, and HUANGFU Kan. A single observer passive localization method using phase difference changing rate only and its error analysis[J]. Acta Aeronautica et Astronautica Sinica, 2009, 30(6): 1090-1095. 李望西, 黃長(zhǎng)強(qiáng), 王勇, 等. 利用相位差變化率的機(jī)載無(wú)源定位跟蹤改進(jìn)算法[J]. 電子與信息學(xué)報(bào), 2013, 35(1): 68-73. doi: 10.3724/SP.J.1146.2012.00345. LI Wangxi, HUANG Changqiang, WANG Yong, et al. An improved airborne passive location tracking algorithm using the rate-of-change of phase difference[J]. Journal of Electronics Information Technology, 2013, 35(1): 68-73. doi: 10.3724/ SP.J.1146.2012.00345. 韓彥明, 郁春來(lái), 萬(wàn)方, 等. 雷達(dá)對(duì)抗偵察系統(tǒng)對(duì)運(yùn)動(dòng)目標(biāo)的單站無(wú)源定位[J]. 現(xiàn)代雷達(dá), 2013, 35(7): 67-71. HAN Yanming, YU Chunlai, WAN Fang, et al. Single observer passive location of radar counterreconnaissance system for moving targets[J]. Modern Radar, 2013, 35(7): 67-71. 周亞強(qiáng), 曹延偉, 馮道旺, 等. 基于視在加速度與角速度信息的單站無(wú)源定位原理與目標(biāo)跟蹤算法研究[J]. 電子學(xué)報(bào), 2005, 33(12): 2120-2124. ZHOU Yaqiang, CAO Yanwei, FENG Daowang, et al. Single observer passive location and tracking arithmetic using look-acceleration and angle rate of changing information[J]. Acta Electronica Sinica, 2005, 33(12): 2120-2124. 王鼎, 張莉, 吳瑛. 一種速度矢量和位置矢量分離估計(jì)的固定單站無(wú)源定位改進(jìn)算法[J]. 宇航學(xué)報(bào), 2007, 28(5): 1342-1347. WANG Ding, ZHANG Li, and WU Ying. An improved algorithm for moving emitter passive location and tracking by estimating its velocity vector and position vector separately based on single non-moving observer[J]. Journal of Astronautics, 2007, 28(5): 1342-1347. HUANG Z and LU J. Total least squares and equilibration algorithm for range difference location[J]. Electronics Letters, 2004, 40(5): 121-122. 張杰, 蔣建中, 郭軍禮. 基于兩步最小二乘定位的偏差改進(jìn)算法[J]. 航空學(xué)報(bào), 2016, 37(2): 695-705. doi: 10.7527/S1000- 6893.2015.0182. ZHANG Jie, JIANG Jianzhong, and GUO Junli. Imprved bias algorithm for localization using two step least square[J]. Acta Aeronautica et Astronautica Sinica, 2016, 37(2): 695-705. doi: 10.7527/S1000-6893.2015.0182. Ho K C and Chan Y T. Geolocation of a known altitude object from TDOA and FDOA measurements[J]. IEEE Transactions on Aerospace and Electronic Systems, 1997, 33(3): 33-36. QU Xiaomei and XIE Lihua. An efficient convex constrained weighted least squares source localization algorithm based on TDOA measurements[J]. Signal Processing, 2016, 119: 142-152. 徐義, 郭福成, 馮道旺. 一種單星僅測(cè)TOA無(wú)源定位方法[J].宇航學(xué)報(bào), 2010, 31(2): 502-508. doi: 10.3873/j.issn.1000- 1328.2010.02.031. XU Yi, GUO Fucheng, and FENG Daowang. A new satellite passive localization method using TOA measurement only[J]. Journal of Astronautics, 2010, 31(2): 502-508. doi: 10.3873/ j.issn.1000-1328.2010.02.031. -
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