Fast acquisition of high-dynamic and weak GPS signals aided by inertial information

Min Hu Zhang; Zhang Ren; Chun Hong Hua

doi:10.3969/j.issn.1001-506X.2011.02.27

Fast acquisition of high-dynamic and weak GPS signals aided by inertial information

Min Hu Zhang^*
, Zhang Ren
, Chun Hong Hua

^*Corresponding author for this work

School of Automation Science and Electrical Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Based on the influence analysis of weak GPS signals on acquisition under high dynamic environment, a fast acquisition algorithm is developed. The involvement of the inertial navigation system is applied to estimate the GPS carrier Doppler frequency so as to decrease the range of frequency uncertainty. By improving the acquisition method of coherent and non-coherent integration based on fast Fourier transform (FFT), it overcomes the energy diffusion caused by the data bit sync and Doppler rate. In addition, the acquisition time is reduced and its sensitivity is enhanced. Simulation results illustrate that the proposed algorithm is valid to 24 dB-Hz carrier-to-noise (CNR) GPS signal acquisition within 300 ms.

Original language	English
Pages (from-to)	366-369
Number of pages	4
Journal	Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics
Volume	33
Issue number	2
DOIs	https://doi.org/10.3969/j.issn.1001-506X.2011.02.27
State	Published - Feb 2011

Keywords

Acquisition
High-dynamic
Inertial information
Weak GPS signal

Access to Document

10.3969/j.issn.1001-506X.2011.02.27

Cite this

@article{d490eacf639345deada67c722ac92765,

title = "Fast acquisition of high-dynamic and weak GPS signals aided by inertial information",

abstract = "Based on the influence analysis of weak GPS signals on acquisition under high dynamic environment, a fast acquisition algorithm is developed. The involvement of the inertial navigation system is applied to estimate the GPS carrier Doppler frequency so as to decrease the range of frequency uncertainty. By improving the acquisition method of coherent and non-coherent integration based on fast Fourier transform (FFT), it overcomes the energy diffusion caused by the data bit sync and Doppler rate. In addition, the acquisition time is reduced and its sensitivity is enhanced. Simulation results illustrate that the proposed algorithm is valid to 24 dB-Hz carrier-to-noise (CNR) GPS signal acquisition within 300 ms.",

keywords = "Acquisition, High-dynamic, Inertial information, Weak GPS signal",

author = "Zhang, \{Min Hu\} and Zhang Ren and Hua, \{Chun Hong\}",

year = "2011",

month = feb,

doi = "10.3969/j.issn.1001-506X.2011.02.27",

language = "英语",

volume = "33",

pages = "366--369",

journal = "Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics",

issn = "1001-506X",

publisher = "Chinese Institute of Electronics",

number = "2",

}

TY - JOUR

T1 - Fast acquisition of high-dynamic and weak GPS signals aided by inertial information

AU - Zhang, Min Hu

AU - Ren, Zhang

AU - Hua, Chun Hong

PY - 2011/2

Y1 - 2011/2

N2 - Based on the influence analysis of weak GPS signals on acquisition under high dynamic environment, a fast acquisition algorithm is developed. The involvement of the inertial navigation system is applied to estimate the GPS carrier Doppler frequency so as to decrease the range of frequency uncertainty. By improving the acquisition method of coherent and non-coherent integration based on fast Fourier transform (FFT), it overcomes the energy diffusion caused by the data bit sync and Doppler rate. In addition, the acquisition time is reduced and its sensitivity is enhanced. Simulation results illustrate that the proposed algorithm is valid to 24 dB-Hz carrier-to-noise (CNR) GPS signal acquisition within 300 ms.

AB - Based on the influence analysis of weak GPS signals on acquisition under high dynamic environment, a fast acquisition algorithm is developed. The involvement of the inertial navigation system is applied to estimate the GPS carrier Doppler frequency so as to decrease the range of frequency uncertainty. By improving the acquisition method of coherent and non-coherent integration based on fast Fourier transform (FFT), it overcomes the energy diffusion caused by the data bit sync and Doppler rate. In addition, the acquisition time is reduced and its sensitivity is enhanced. Simulation results illustrate that the proposed algorithm is valid to 24 dB-Hz carrier-to-noise (CNR) GPS signal acquisition within 300 ms.

KW - Acquisition

KW - High-dynamic

KW - Inertial information

KW - Weak GPS signal

UR - https://www.scopus.com/pages/publications/79953809021

U2 - 10.3969/j.issn.1001-506X.2011.02.27

DO - 10.3969/j.issn.1001-506X.2011.02.27

M3 - 文章

AN - SCOPUS:79953809021

SN - 1001-506X

VL - 33

SP - 366

EP - 369

JO - Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics

JF - Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics

IS - 2

ER -

Fast acquisition of high-dynamic and weak GPS signals aided by inertial information

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this