Using fuzzy logic controller with adaptive detection scheme for fast acquisition of satellite navigation signals

Chang, Chung‐Liang

doi:10.1080/02533839.2010.9671625

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…The 0 N stands for single sideband power spectrum density of noise. () G  is the filtered code sequence expressed by C/A-code, P-code or binary offset carrier (BOC) signal [12,21,22].…”

Section: Signal Modelmentioning

confidence: 99%

“…As a result, the number of frequency bins plays a crucial factor in the signal acquisition process. In [12], the author employs that signal correlation value (search power) and its variation can reduce signal search times on a two-dimension (2D) plane using adaptive logic control method to shorten search time. The result also yields high-precision acquisition parameters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Genetic Control with Adaptive Scaling Scheme to Signal Acquisition in Global Navigation Satellite System Receiver

Chang

Shou²

2012

Algorithms

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This paper presents a genetic-based control scheme that not only utilizes evolutionary characteristics to find the signal acquisition parameters, but also employs an adaptive scheme to control the search space and avoid the genetic control converging to local optimal value so as to acquire the desired signal precisely and rapidly. Simulations and experiment results show that the proposed method can improve the precision of signal parameters and take less signal acquisition time than traditional serial search methods for global navigation satellite system (GNSS) signals

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“…The 0 N stands for single sideband power spectrum density of noise. () G  is the filtered code sequence expressed by C/A-code, P-code or binary offset carrier (BOC) signal [12,21,22].…”

Section: Signal Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of Genetic Control with Adaptive Scaling Scheme to Signal Acquisition in Global Navigation Satellite System Receiver

Chang

Shou²

2012

Algorithms

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show abstract

“…It has been widely applied in many fields because of its good performance. In signal processing, Fuzzy logic has been used for noise cancellation [28] and frequency estimation [29][30][31]. For example, in ref.…”

Section: Introductionmentioning

confidence: 99%

A fine frequency estimation algorithm based on DFT samples and fuzzy logic for a real sinusoid

Shi

Wang

et al. 2022

IET Radar Sonar & Navi

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The study on the frequency estimation of a real sinusoid has been addressed in this article. Discrete‐Fourier‐transform (DFT)‐based frequency estimation always uses the maximum bin of DFT as a coarse estimation followed by a fine estimation algorithm, which computes a correction term to compensate for the initial frequency offset caused by the coarse estimation. To enhance the frequency estimation accuracy, a fine estimation algorithm based on DFT samples and fuzzy logic (FL) is proposed in this study. Firstly, a modified phase‐based algorithm is presented to estimate the sign of the correction term. Then, a main‐lobe coefficient and a side‐lobe coefficient are constructed using the amplitude of three spectral lines to calculate the correction term. A FL controller is utilised to generate a weighted factor to adjust the weight of the main‐lobe coefficient and the side‐lobe coefficient in the formula of the correction term. Compared with other existing fine algorithms, the proposed algorithm improves the correct probability of sign estimation by 10%–20%, and improves the estimation accuracy by 5%–8% at lower carrier‐to‐noise ratios (CNRs). In addition, the performance of the proposed algorithm is less affected by the initial frequency offset than other algorithms.

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Modified compressive sensing approach for GNSS signal reception in the presence of interference

Chang

2014

GPS Solut

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Using fuzzy logic controller with adaptive detection scheme for fast acquisition of satellite navigation signals

Cited by 5 publications

References 10 publications

Application of Genetic Control with Adaptive Scaling Scheme to Signal Acquisition in Global Navigation Satellite System Receiver

Application of Genetic Control with Adaptive Scaling Scheme to Signal Acquisition in Global Navigation Satellite System Receiver

A fine frequency estimation algorithm based on DFT samples and fuzzy logic for a real sinusoid

Modified compressive sensing approach for GNSS signal reception in the presence of interference

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