Impact of GPS acquisition strategy on decision probabilities

Borio, Daniele; Camoriano, L.; Presti, Letizia Lo

doi:10.1109/taes.2008.4655359

Cited by 77 publications

(41 citation statements)

References 14 publications

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“…Borio et al 25) introduced three strategies: maximum, serial and hybrid. In the maximum search, the correlation function is evaluated over all of the values of Doppler shift and code delay.…”

Section: Mean Calculation Timementioning

confidence: 99%

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Analysis of GNSS Signal Acquisition Methods for the Bit-Transition Problem for a Single Code Period

Jeon

Kim

et al. 2013

Trans. Japan Soc. Aero. S Sci.

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A signal-acquisition process using the fast Fourier transform algorithm enables parallel correlation based on the circularity of code sequences. If a bit transition exists in the received signal sample, the correlation peak does not represent the maximum value at the true Doppler shift. Although there has been some research to solve the bit-transition problem, an analysis of this research with a performance index does not exist. This paper analyzes and compares calculation time and the signal detection probability of two existing methods and a new method for single-period code acquisition. Simulation results indicate that although the zero-padding method shows the best performance based on signal detection probability, the calculation time of the new method is the fastest of the test methods.

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Section: Mean Calculation Timementioning

confidence: 99%

“…Using the maximum search, the signal-detection probability for searching over all of the search cells can be written as 25) …”

Section: Statistical Modelsmentioning

confidence: 99%

Analysis of GNSS Signal Acquisition Methods for the Bit-Transition Problem for a Single Code Period

Jeon

Kim

et al. 2013

Trans. Japan Soc. Aero. S Sci.

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“…• Hypothesis HI: the chosen cell named HI cell or node does correspond to the right code delay and Doppler frequency alignment of the received SIS and so (2) In case of a coherent integration, and a CAF envelope evaluated as R = 1 2 + Q 2 (non-normalized summation of the in-phase and quadrature phase signal at the output of the correlators), the cell probabilities assume the following expressions [5]:…”

Section: ) Cell Probabilitiesmentioning

confidence: 99%

Technique for MAT analysis and performance assessment of P2P acquisition engines

Kassabian

Presti

2012

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium

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The first processing block within a Global Navigation Satellite Systems (GNSS) receiver is the acquisition engine. As it may represent a bottleneck for subsequent blocks in the receiver chain, it is essential to tune the acquisition engine to have any chance in designing an efficient receiver. Peer to Peer (P2P) networks present the opportunity to do so , by exchanging GNSS aiding information among nodes of the network to reduce the acquisition search space. Moreover, the Mean Acquisition Time (MAT) is often used as a performance metric and usually derived using probability generating functions and flow graph diagrams based on Markov processes. In this paper, an intuitive technique based on acquisition time and MAT diagrams is presented and used to derive an expression of the MAT as well as to analyze its constitutive terms. The MAT of a standard acquisition engine is compared to that of a P2P engine with a thorough investigation of a Gaussian search order and zig-zag search strategy to assess the performance improvement brought about by P2P networks.

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“…The presence of high rate data on the received signal destroys the periodicity of the PRN code present on the incoming signal. The presence of secondary code on the pilot channel has a similar effect [15]. As a consequence the single period circular correlation cannot be used alone for the search space evaluation as used by fast acquisition scheme based on FFT in time domain.…”

Section: -Step Acquisition Of Galileo E1 Signalmentioning

confidence: 99%

Performance analysis of pre-correlation differential acquisition scheme

Tahir

Presti

2012

2012 6th ESA Workshop on Satellite Navigation Technologies (Navitec 2012) &Amp; European Workshop on GNSS Signals and Signal Pr

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Pre-correlation differential detection (PDD) scheme is studied for global navigation satellite systems (GNSS) receiver design. By performing a differential detection at the chip or sample level before correlation process, the effect of both data and residual carrier is eliminated which in turn allows for frequency independent code phase acquisition. Hence the search space and computational complexity is reduced to a large extent. The detection performance of this type of scheme is analysed in terms of receiver operating characteristic (ROC) curves and verified by simulation.

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Impact of GPS acquisition strategy on decision probabilities

Cited by 77 publications

References 14 publications

Analysis of GNSS Signal Acquisition Methods for the Bit-Transition Problem for a Single Code Period

Analysis of GNSS Signal Acquisition Methods for the Bit-Transition Problem for a Single Code Period

Technique for MAT analysis and performance assessment of P2P acquisition engines

Performance analysis of pre-correlation differential acquisition scheme

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