High Dynamic GPS Receiver Using Maximum Likelihood Estimationand Frequency Tracking

Hurd, W. J.; Statman, Joseph I.; Vilnrotter, V.

doi:10.1109/taes.1987.310876

Cited by 95 publications

(49 citation statements)

References 6 publications

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“…The recursive process is converted into the structure diagram of the algorithm shown in Fig.2, and the delay module 1 z in the loop is the estimate of the current time prediction, and the module k+1 in Fig.1 is corresponding to the step estimate [8,9].…”

Section: Phase Locked Loop(pll) and Kalman Filter(kf)mentioning

confidence: 99%

Signal Frequency Estimation Based on Kalman Filtering Method

Liu

Yan

Zheng

2016

MATEC Web of Conferences

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Abstract. In order to further improve the frequency estimation precision under high dynamic, the frequency estimation method based on Kalman filter is studied. Two methods of Kalman filter directly using for frequency estimation are studied, taking the phase of echo signal and the echo signal for measurements, which adopt nonlinear and linear Kalman filtering algorithm to estimate the Doppler frequency. Based on the study of performance of these two methods, the Doppler adaptability of the two methods is studied. The simulation results show that the speed precision is improved. But, the two methods of this research are limited by the fixed frequency conversion, and when Doppler changed a large range, the filtering is easy to diverge.

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Section: Phase Locked Loop(pll) and Kalman Filter(kf)mentioning

confidence: 99%

Signal Frequency Estimation Based on Kalman Filtering Method

Liu

Yan

Zheng

2016

MATEC Web of Conferences

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“…Typical carrier-to-noise ratios (CNR's) for GPS are around 30 to 40 dB-Hz [6]. But if atmospheric conditions are severe or jamming is present, the CNR could drop into the twenties or even lower.…”

Section: Simulation Studymentioning

confidence: 99%

Fuzzy logic for digital phase-locked loop filter design

Simon¹,

El-Sherief²

1995

IEEE Trans. Fuzzy Syst.

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“…Transmitter and receiver relative dynamics causes Doppler effect in the carrier and code frequency of the received signal thus requiring tracking capability to the loops. The typical tradeoff in tracking loop design is bandwidth versus dynamic performance: the effects of noise increase with increasing loop bandwidth, while dynamic tracking errors increase with decreasing loop bandwidth [1]. Nowadays, the loop structure known as FLL-assisted-PLL [2] is very often adopted for GPS receivers.…”

Section: Introductionmentioning

confidence: 99%

“…This is because it implies short integration times that preclude correlators to collect sufficient energy to de-spread the signal. To overcome this limitation other receiver structures have been proposed in [1], claiming tracking capability up to 150g of acceleration, in contrast with the 5g regularly assigned to tracking loops. However, the required computational burden is large since several simultaneous correlation calculations and FFT computations are needed.…”

Section: Introductionmentioning

confidence: 99%

GPS Digital Tracking Loops Design for High Dynamic Launching Vehicles

Roncagliolo

Blasis

Muravchik

2006

2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications

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Abstract-This paper describes the design of digital tracking loops for GPS receivers in a high dynamics environment, without external aiding. We adopted the loop structure of a frequencylocked loop (FLL)-assisted phase-locked loop (PLL) and design it to track accelerations steps, as those occurring in launching vehicles. We used a completely digital model of the loop where the FLL and PLL parts are jointly designed, as opposed to the classical discretized analog model with separately designed FLL and PLL. The new approach does not increase the computational burden. We performed simulations and real RF signal experiments of a fixed-point implementation of the loop, showing that reliable tracking of steps up to 40g can be achieved.

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High Dynamic GPS Receiver Using Maximum Likelihood Estimationand Frequency Tracking

Cited by 95 publications

References 6 publications

Signal Frequency Estimation Based on Kalman Filtering Method

Signal Frequency Estimation Based on Kalman Filtering Method

Fuzzy logic for digital phase-locked loop filter design

GPS Digital Tracking Loops Design for High Dynamic Launching Vehicles

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