Multiple phase screen modeling of ionospheric scintillation along radio occultation raypaths

Carrano, Charles S.; Groves, K. M.; Caton, R. G.; Rino, C. L.; Straus, P. R.

doi:10.1029/2010rs004591

Cited by 52 publications

(73 citation statements)

References 39 publications

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“…This implies that GNSS RO is more sensitive to the Es layer occurrence. In this regard, Carrano et al () used RO simulator tool to propagate waves in an RO geometry and space‐to‐ground geometry and showed the expected difference in sensitivity. The main reason is the geometry with respect to the plasma irregularities, and the propagation path length through an Es layer is substantially different.…”

Section: Observation and Interpretationmentioning

confidence: 99%

A Study of Daytime L‐Band Scintillation in Association With Sporadic E Along the Magnetic Dip Equator

et al. 2017

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In this paper, we present a comprehensive study of occurrence of L‐band scintillation in association with the appearance of sporadic E (Es) along the magnetic dip equator during daytime in 2013. The presence of L‐band scintillation was determined from signals collected with GNSS (Global Navigation Satellite Systems) ground‐based Scintillation Network Decision Aid receivers from five stations situated at the magnetic dip equator. The detection and analysis of Es layers were obtained from GNSS FORMOSAT‐3/Constellation Observing System for Meteorology, Ionosphere, and Climate (F3/C) radio occultation (RO) data. Combining ground‐based data with the limb‐viewing geometry from space provides a unique opportunity to retrieve complementary information about scintillation and association with equatorial E region irregularities (i.e., Es) during daytime. Results for the first time show that daytime scintillation does occur at the magnetic dip equator and the occurrence is associated with the appearance of Es observed using GNSS F3/C RO data.

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Section: Observation and Interpretationmentioning

confidence: 99%

A Study of Daytime L‐Band Scintillation in Association With Sporadic E Along the Magnetic Dip Equator

et al. 2017

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“…In these works, pure numerical calculations were performed with the background ionosphere modeled by a homogeneous slab utilizing the finite difference method. Other works [ Grimault , ; Beniguel , ; Rino , ; Carrano et al , ] employed another pure numerical method (the multiple phase screen technique), based on the split step technique [ Knepp , ], to deal with the case of the inhomogeneous background medium.…”

Section: Solutions To Markov's Parabolic Equationsmentioning

confidence: 99%

“…The numerical approaches, as the multiple phase screen method [ Grimault , ; Beniguel , ; Rino , ; Carrano et al , ], based on the split step technique [ Knepp , ], or the finite difference method [ Liu et al , ; Liu and Yeh , ; Engavale and Bhattacharyya , ] permit a pure numerical treatment of this problem. Along with this, an analytical consideration, which can give physical insight into the problem, is also of importance, but to obtain it is a fairly complicated procedure.…”

Section: Introductionmentioning

confidence: 99%

Strong scintillation of GNSS signals in the inhomogeneous ionosphere: 1. Theoretical background

Zernov

Gherm

2015

Radio Sci.

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The analytical theory of the Global Navigation Satellite Systems (GNSS) signal propagation through the inhomogeneous ionosphere with time-varying embedded localized random inhomogeneities of electron density is constructed in order to describe the regime of strong scintillation of the wave field propagating in the inhomogeneous ionospheric layer. The theory is based on the solutions of the appropriate Markov's parabolic moment equations, extended to the case of the inhomogeneous background medium. The solutions are validated by the comparison with some rigorous (numerical) solutions known for some limiting cases. The developed theory forms the theoretical background for constructing the physically based software simulator of the random transionospheric GNSS signals.

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“…Carrano et al developed the Radio Occultation Scintillation Simulator (ROSS). They used the MPS technique to simulate the forward scatter of radio waves by irregularities in the equatorial ionosphere during radio occultation experiments [15]. Deshpande developed a model called Satellite-beacon Ionospheric-scintillation Global Model of the upper Atmosphere (SIGMA) to simulate GNSS scintillations for high-latitude areas.…”

Section: Introductionmentioning

confidence: 99%

The Ionospheric Scintillation Effects on the BeiDou Signal Receiver

Zhao

Feng

2016

Sensors

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Irregularities in the Earth’s ionosphere can make the amplitude and phase of radio signals fluctuate rapidly, which is known as ionospheric scintillation. Severe ionospheric scintillation could affect the performance of the Global Navigation Satellite System (GNSS). Currently, the Multiple Phase Screen (MPS) technique is widely used in solving problems caused by weak and strong scintillations. Considering that Southern China is mainly located in the area where moderate and intense scintillation occur frequently, this paper built a model based on the MPS technique and discussed the scintillation impacts on China’s BeiDou navigation system. By using the BeiDou B1I signal, this paper analyzed the scintillation effects on the receiver, which includes the acquisition and tracking process. For acquisition process, this paper focused on the correlation peak and acquisition probability. For the tracking process, this paper focused on the carrier tracking loop and the code tracking loop. Simulation results show that under high scintillation intensity, the phase fluctuation could be −1.13 ± 0.087 rad to 1.40 ± 0.087 rad and the relative amplitude fluctuation could be −10 dB to 8 dB. As the scintillation intensity increased, the average correlation peak would decrease more than 8%, which could thus degrade acquisition performance. On the other hand, when the signal-to-noise ratio (SNR) is comparatively lower, the influence of strong scintillation on the phase locked loop (PLL) is much higher than that of weak scintillation. As the scintillation becomes more intense, PLL variance could consequently results in an error of more than 2.02 cm in carrier-phase based ranging. In addition, the delay locked loop (DLL) simulation results indicated that the pseudo-range error caused by strong scintillation could be more than 4 m and the consequent impact on positioning accuracy could be more than 6 m.

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Multiple phase screen modeling of ionospheric scintillation along radio occultation raypaths

Cited by 52 publications

References 39 publications

A Study of Daytime L‐Band Scintillation in Association With Sporadic E Along the Magnetic Dip Equator

A Study of Daytime L‐Band Scintillation in Association With Sporadic E Along the Magnetic Dip Equator

Strong scintillation of GNSS signals in the inhomogeneous ionosphere: 1. Theoretical background

The Ionospheric Scintillation Effects on the BeiDou Signal Receiver

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