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Ionospheric Irregularity Drift Velocity Estimation Method Based on Geodesic Receiver

A drift velocity, ionosphere technology, applied in measurement devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., to achieve the effect of reducing costs and wide practicability

Active Publication Date: 2021-12-21
CHINA UNIV OF MINING & TECH
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  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, a method for estimating ionospheric irregularity drift velocity based on geodesic receivers is provided, and widely distributed low sampling frequency geodetic receivers are used to estimate ionospheric irregularity drift The speed solves the technical problem that it is difficult to dynamically monitor ionospheric irregularities on a global scale

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  • Ionospheric Irregularity Drift Velocity Estimation Method Based on Geodesic Receiver
  • Ionospheric Irregularity Drift Velocity Estimation Method Based on Geodesic Receiver
  • Ionospheric Irregularity Drift Velocity Estimation Method Based on Geodesic Receiver

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Embodiment Construction

[0031] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0032] like figure 1 As shown, a method for estimating the drift velocity of ionospheric irregularities based on a geodesic receiver of the present invention:

[0033] aBecause the drift speed of ionospheric irregularities in the Arctic region is usually 300m / s to 3000m / s, for a sampling frequency of 1s, the drift distance of ionospheric irregularities within the sampling interval is 300m to 3km. The drift velocity of ionospheric irregularities, select three geodesic receivers with a baseline length less than 3km in the monitoring area, and obtain the peak electron density changes in the ionospheric F region through the incoherent scatter radar and ionospheric altimeter electron density files Interval, to determine the assumed altitude of the ionosphere, combined with vector trigonometric functions, to estimate the scanning speed of the GNSS satellite at th...

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Abstract

The invention discloses a method for estimating the drift velocity of an ionospheric irregular body based on a geodesic receiver, which is suitable for monitoring the scintillation astronomical disaster of the ionosphere. First, study the range of peak electron density in the ionospheric F region, determine the assumed height of the ionosphere, and combine the vector trigonometric function to estimate the scanning speed of the GNSS satellite at the assumed height of the ionosphere; the carrier phase data is separated by geodetic trend and receiver hardware delay Correction, carrier phase signal of synchronous geodesic receiver network; estimation of drift speed of irregular body shape observed by receiver network; scanning speed of GNSS satellites at assumed altitude in ionosphere and irregular body shape drift observed by receiver network Do vector sum of velocities to obtain ionospheric irregularity drift velocity. The method has simple steps, greatly reduces the cost of ionospheric irregularity monitoring, uses the existing station technical bureau, is conducive to the complete monitoring of global ionospheric irregularity dynamic changes, and has wide practicability.

Description

technical field [0001] The invention is applicable to an ionospheric irregular body drift velocity estimation method, and is especially suitable for an ionospheric irregular body drift velocity estimation method based on a geodesic receiver for monitoring ionospheric scintillation astronomical disasters. [0002] technical background [0003] When GNSS satellite signals pass through ionospheric irregularities, there will be severe fluctuations in amplitude or phase, and this phenomenon is called ionospheric scintillation. Ionospheric scintillation is a kind of astronomical disaster that occurs frequently in the equatorial and polar regions. It is a major problem faced by space science in recent years, and it brings great challenges to the stability of GNSS system position, navigation and time services. The layer scintillation event caused the interruption of GNSS navigation satellite service, seriously disturbed the power, banking system and navigation safety of the Arctic ro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/52
CPCG01S19/52
Inventor 赵东升陶媛媛李旺王潜心李宸栋唐旭张克非
Owner CHINA UNIV OF MINING & TECH