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| Locating and Tracking of 3-D Moving Targets Using Single Base Station |
| Tian Xiao-hua①②; Liao Gui-sheng①; Wang Hong-yang① |
| ①Key Lab of Radar Signal Processing Xidian University Xi’an 710071 China;②The Telecommunication Eng. Institute Air Force Eng. Univ., Xi’an 710077 China |
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Abstract A method of position locating and tracking using pilot .sequence transmitted by the single CDMA Base Stations(BS) for 3-D moving targets is presented in this paper. First, based on the fact that the interfering component is different from the signal reflected by the moving target in the Doppler shift and the property of the auto-correlation function of PN sequence, the interfering component is filtered and the Time Difference Of Arrival(TDOA) is estimated. Then, position location is obtained using the method similar to Chan(1994). Finally, considering the fact that the motion of target is linear with constant speed vector in short duration, the accuracy of position location is improved and the velocity of target is estimated. Its effectiveness is verified by the simulation results.
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Received: 22 December 2002
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2004, Vol. 26 
