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http://dx.doi.org/10.5302/J.ICROS.2008.14.6.603

A Fast GPS Signal Acquisition Method for High Speed Vehicles Using INS Velocity and Multiple Correlators  

Jeong, Ho-Cheol (충남대 전자전파정보통신공학과)
Kim, Jeong-Won (충남대 전자공학과)
Hwang, Dong-Hwan (충남대 전기정보통신공학부)
Lee, Sang-Jeong (충남대 전기정보통신공학부)
Lee, Tae-Gyoo (국방과학연구소)
Song, Ki-Won (국방과학연구소)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.14, no.6, 2008 , pp. 603-607 More about this Journal
Abstract
This paper proposes a fast acquisition method using INS velocity and multiple correlators for high speed vehicles. In order to reduce acquisition time in GPS receiver, the method utilizes inertial velocity information and multiple correlators. Search range of the Doppler frequency is reduced by using INS velocity and the number of cells at one search can be increased by using multiple correlators. By using both multiple correlators and the INS velocity in the acquisition, search space can be greatly reduced. Experimental results show that the method gives faster signal acquisition performance than the conventional method.
Keywords
GPS; fast acquisition; INS velocity; multiple correlators;
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  • Reference
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