INS-Assisted GNSS Signal Tracking Modeling and Assessment

Abstract:

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To improve the tracking performance of GNSS receiver in signal-attenuated environments, phase lock loop (PLL) and delay lock loop (DLL) assisted with Inertial Navigation System (INS) measurements are considered. Combining inertial navigation principles with signal processing, this paper proposes a simplified but efficient mathematical model of INS-assisted second-order tracking loops. Compared with unaided GNSS receiver, the tracking behavior of INS-assisted receiver is quantitatively analyzed, and the kind of INS suitable to guarantee the tracking condition is determined. The results indicate that an INS with 1 deg/h gyro drift is necessary to support PLL, and MEMS inertial sensor with 100 deg/h gyro drift is sufficient to aid DLL to keep favored tracking ability.

Info:

Periodical:

Advanced Materials Research (Volumes 271-273)

Edited by:

Junqiao Xiong

Pages:

603-608

DOI:

10.4028/www.scientific.net/AMR.271-273.603

Citation:

P. Ye et al., "INS-Assisted GNSS Signal Tracking Modeling and Assessment", Advanced Materials Research, Vols. 271-273, pp. 603-608, 2011

Online since:

July 2011

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Price:

$35.00

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