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Differential velocity measurement method, system and device between non-combined carrier phase epochs and medium

A technology of difference between epochs and carrier phase, applied in the field of satellite measurement, can solve the problems of unfavorable expansion of multi-frequency data processing, etc., achieve the effect of improving speed measurement accuracy and robustness, retaining ionospheric delay parameters, and enriching observation data

Pending Publication Date: 2022-02-01
WUHAN UNIV OF TECH
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Problems solved by technology

However, the current TDCP speed measurement mainly adopts the method of single-frequency or dual-frequency ionosphere-free combination, which is not conducive to expanding to multi-frequency data processing

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  • Differential velocity measurement method, system and device between non-combined carrier phase epochs and medium
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  • Differential velocity measurement method, system and device between non-combined carrier phase epochs and medium

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.

[0051] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based...

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Abstract

The invention discloses a non-combined carrier phase epoch differential velocity measurement method, system and device and a medium, wherein the method comprises the steps: obtaining the observation data of a satellite, wherein the observation data comprise a carrier phase and a satellite elevation angle; carrying out preprocessing and error correction on the obtained observation data; constructing a velocity measurement observation equation of a phase epoch difference method of the non-combined multi-frequency multi-system according to the corrected observation value of the carrier phase, wherein an ionized layer delay error is used as an estimation parameter; performing weight determination according to the satellite elevation angle, and constructing a random model; and according to the velocity measurement observation equation and the random model, calculating the three-dimensional velocity and the ionosphere delay error of the receiver. Based on an original carrier phase observation value, ionosphere delay errors are parameterized, and speed estimation of a high-precision receiver is achieved in combination with a satellite elevation angle; meanwhile, ionosphere delay parameters are reserved, and observation data are provided for geophysical research, so that the method can be widely applied to the field of satellite measurement.

Description

technical field [0001] The invention relates to the field of satellite measurement, in particular to a non-combined carrier phase epoch differential speed measurement method, system, device and medium. Background technique [0002] Velocity is an important parameter to describe the state of motion of an object. The continuous development of Global Navigation Satellite System (GNSS) provides a new high-precision speed measurement method. Compared with traditional laser, sound wave, radar speed measurement and other speed measurement methods, GNSS speed measurement has the characteristics of all-weather, real-time continuous, and global coverage. Coseismic displacement monitoring, surface deformation process research and other fields. [0003] GNSS speed measurement mainly includes position difference method, original Doppler value method and phase epoch difference method (Time-Differenced Carrier Phase, TDCP). The position difference method obtains the speed by calculating...

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Application Information

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IPC IPC(8): G01S19/52G01S19/23G01S19/07
CPCG01S19/52G01S19/072G01S19/235
Inventor 郑凯叶子康刘子康刘克中陈宣佑陈岩硕崔宇辰邢正陈默子曾旭明
Owner WUHAN UNIV OF TECH
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