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Ionosphere TEC real-time measurement method based on GNSS receiver

A real-time measurement and receiver technology, used in radio wave measurement systems, measurement devices, satellite radio beacon positioning systems, etc., can solve the problem that GNSS receivers cannot achieve absolute ionospheric TEC calculation and do not meet the real-time measurement of ionospheric TEC. requirements and other issues, to achieve the effect of fast computing speed, small computing and storage resources, and high operating stability

Inactive Publication Date: 2021-07-13
中国电波传播研究所
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Problems solved by technology

[0003] At present, to achieve ionospheric TEC measurement by GNSS receivers, it is necessary to jointly estimate the hardware delay of GNSS satellites with the observation data of other stations or directly download the hardware delay information of GNSS satellites from the Internet, and then use the long-term cumulative observation of a single station The data is estimated by least squares to obtain the hardware delay value of the receiver, and then extract the ionospheric TEC parameters, which makes the offline GNSS receiver unable to realize the absolute ionospheric TEC calculation, and also does not meet the needs of ionospheric TEC real-time measurement

Method used

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  • Ionosphere TEC real-time measurement method based on GNSS receiver

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Embodiment 1

[0072] Example 1, such as figure 1 As shown, the present embodiment discloses a real-time ionospheric TEC measurement method based on a GNSS receiver, comprising the following steps:

[0073] Step 1, extract the real-time measurement data of the GNSS receiver:

[0074] Step 11, obtain the GNSS satellite broadcast ephemeris, solve and obtain the latitude and longitude coordinates of the GNSS satellite;

[0075] Step 12, obtain the longitude and latitude height coordinates of the GNSS receiver through the GNSS positioning program;

[0076] Step 13, extract the pseudorange P on the L1 frequency of the GNSS receiver 1 (unit m) and the pseudorange P on the L2 frequency 2 (unit m);

[0077] Step 14, extract the carrier phase Φ on the L1 frequency of the GNSS receiver 1 (unit cycle) and carrier phase Φ on L2 frequency 2 (unit cycle);

[0078] Step 2, calculate the ionospheric TEC based on pseudorange observations:

[0079] Using the pseudorange measurements on the L1 and L2 f...

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Abstract

The invention discloses an ionosphere TEC real-time measurement method based on a GNSS receiver, and the method comprises the following steps: 1, extracting the real-time measurement data of the GNSS receiver, 2, calculating the ionosphere TEC based on pseudo-range observation, 3, calculating the ionosphere TEC based on a carrier phase, 4, calculating the ionosphere TEC based on carrier phase leveling, 5, constructing an ionosphere TEC observation equation, and 6, carrying out Kalman filtering real-time estimation; and 7, extracting and outputting real-time TEC information of the ionized layer. The method disclosed by the invention is high in robustness and high in calculation speed, can meet the requirements of GNSS receivers in different areas for relatively high-precision real-time ionosphere measurement, so that high-precision ionosphere TEC parameters are obtained, and the method has an important practical value.

Description

technical field [0001] The invention belongs to the technical field of ionospheric measurement, in particular to a GNSS receiver-based ionospheric TEC real-time measurement method in the field. Background technique [0002] As an important part of the earth's space environment, the ionosphere has an important impact on systems such as short-wave communication, satellite communication, satellite navigation, and measurement, control and monitoring. Using various detection equipment to achieve accurate measurement of ionospheric parameters is essential for eliminating and slowing down the ionosphere. The impact on the radio information system has very important practical value. With the development of global navigation satellite systems such as GPS, GLONASS, Beidou and Galileo, the number of GNSS satellites in orbit is increasing, and GNSS receivers have become one of the most important detection methods for the ionosphere. [0003] At present, in order to realize ionospheric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/07G01S19/43
CPCG01S19/072G01S19/43
Inventor 欧明陈龙江许娜王妍吴家燕马宝田陈亮冯健熊雯於晓刘钝甄卫民
Owner 中国电波传播研究所
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