Weak GPS Signal Acquisition Method Using Variable Threshold

CONG Li; MENG Hailuo; QIN Honglei; NIU Jingyi

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Article Navigation > Chinese Journal of Electronics > 2013 > 22(4): 838-842

CONG Li, MENG Hailuo, QIN Honglei, et al., “Weak GPS Signal Acquisition Method Using Variable Threshold,” Chinese Journal of Electronics, vol. 22, no. 4, pp. 838-842, 2013,

Citation:

CONG Li, MENG Hailuo, QIN Honglei, et al., “Weak GPS Signal Acquisition Method Using Variable Threshold,” Chinese Journal of Electronics, vol. 22, no. 4, pp. 838-842, 2013,

CONG Li, MENG Hailuo, QIN Honglei, et al., “Weak GPS Signal Acquisition Method Using Variable Threshold,” Chinese Journal of Electronics, vol. 22, no. 4, pp. 838-842, 2013,

Citation:

CONG Li, MENG Hailuo, QIN Honglei, et al., “Weak GPS Signal Acquisition Method Using Variable Threshold,” Chinese Journal of Electronics, vol. 22, no. 4, pp. 838-842, 2013,

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Weak GPS Signal Acquisition Method Using Variable Threshold

1.
School of Electronics and Information Engineering, BeiHang University, Beijing 100191, China;
2.
No.205 Institute of China Weaponry Industrial Group, Xi'an, Shanxi 710065, China

Funds: This work is supported by the National Natural Science Foundation of China (No.61101077).

More Information

Corresponding author: CONG Li, QIN Honglei
Received Date: 2011-01-01
Rev Recd Date: 2013-04-01
Publish Date: 2013-09-25

Abstract

Abstract

Coherent integration and non-coherent accumulation have been developed to acquire weak Global position system (GPS) signals. The threshold of acquisition algorithm is fixed, and is determined by the weakest signal. Strong signals and weak signals always coexist in the physical environment. A new method is presented for weak GPS signal acquisition using variable threshold. Through adjusting the thresholds with different noncoherent accumulation times, this method is applicable to all kinds of signals. It has wonderful acquisition efficiency through theory analysis and real signal verification, especially when strong signals and weak signals coexist, it can greatly reduce acquisition time.
- Global position system (GPS),
- Weak signal,
- Acquisition,
- Variable threshold

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References(10)

References

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