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Error Analysis in Dual-Aircraft Cooperative Locating

ZHU Jianhui,FANG Yangwang,ZHANG Ping,LI Wangxi(Engineering Institute,Air Force Engineering University,Xi'an 710038,China)  
Locating based on angles of arrival measurement is the fundamental method in cooperative locating.The algorithm and accuracy of cross locating were analyzed.Firstlya method for calculating the locational ambiguity region was givenand simulation was made.Thenthe accuracy of cross locating was analyzedthe locating algorithm and error calculating formulas were given.Simulations were made for distribution of target GDOP with different distance between two aircraftsdifferent aircrafts interval error and bearing error.Simulation results show that the locating error increases with the incraese of aircrafts interval error and bearing errorbut as the distance between two aircrafts increaseit will tend to decrease firstly and then to increase.
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