Beidou single frequency cycle slip detection method

A cycle-slip detection and single-frequency technology, which is applied in measuring devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems such as small cycle slips are difficult to find

Inactive Publication Date: 2015-12-09
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0003] The invention provides a Beidou single-frequency cycle slip detection

Method used

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  • Beidou single frequency cycle slip detection method
  • Beidou single frequency cycle slip detection method
  • Beidou single frequency cycle slip detection method

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Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1: as Figure 1-11 As shown, a Beidou single-frequency cycle-slip detection method, firstly use the pseudo-range observation value ρ t Subtract carrier phase observations And then calculate the difference between epochs to get the cycle slip test amount D(t); then use the Hankel matrix to construct the attractor trajectory matrix A for the cycle slip test amount D(t), and perform singular value decomposition on A After processing, a limited number of effective singular values ​​that can reflect the mutation information are obtained; finally, the SVD inverse operation is used to reconstruct the component signal for each effective singular value, and the cycle slip is detected according to the position of the maximum value point in the superimposed signal after superimposing each component signal .

[0044] The concrete steps of described method are as follows:

[0045] Step1, the pseudo-range observation value ρ t Subtract the carrier phase observation φ ...

Embodiment 2

[0059] Embodiment 2: as Figure 1-11 As shown, a Beidou single-frequency cycle-slip detection method, firstly use the pseudo-range observation value ρ t Subtract carrier phase observations And then calculate the difference between epochs to get the cycle slip test amount D(t); then use the Hankel matrix to construct the attractor trajectory matrix A for the cycle slip test amount D(t), and perform singular value decomposition on A After processing, a limited number of effective singular values ​​that can reflect the mutation information are obtained; finally, the SVD inverse operation is used to reconstruct the component signal for each effective singular value, and the cycle slip is detected according to the position of the maximum value point in the superimposed signal after superimposing each component signal .

Embodiment 3

[0060] Embodiment 3: as Figure 1-11 As shown, a Beidou single-frequency cycle-slip detection method, firstly use the pseudo-range observation value ρ t Subtract carrier phase observations And then calculate the difference between epochs to get the cycle slip test amount D(t); then use the Hankel matrix to construct the attractor trajectory matrix A for the cycle slip test amount D(t), and perform singular value decomposition on A After processing, a limited number of effective singular values ​​that can reflect the mutation information are obtained; finally, the SVD inverse operation is used to reconstruct the component signal for each effective singular value, and the cycle slip is detected according to the position of the maximum value point in the superimposed signal after superimposing each component signal .

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Abstract

The invention relates to a Beidou single frequency cycle slip detection method, which belongs to the field of Beidou navigation and positioning data processing. A pseudo range observation value is firstly used for subtracting a carrier phase observation value, the difference value is then differenced between epochs, and a cycle slip detection amount is obtained; then, a Hankel matrix is used for building an attractor track matrix for the cycle slip detection amount, singular value decomposition (SVD) is carried out, and a limited number of effective singular values capable of reflecting abrupt information can be obtained; and finally, SVD inverse operation is used for reconstructing a component signal for each effective singular value, and after the component signals are overlapped, the cycle slip is detected according to the position of the maximum value point in the overlapped signals. Amplitude changes only need to be features, whether cycle slip happens is judged only by a cycle slip detection amount amplitude through SVD processing, the problem that the traditional method is hard to detect small cycle slip can be solved, and small cycle slip with 1 to 5 cycles in the Beidou carrier phase observation value can be effectively detected.

Description

technical field [0001] The invention relates to a Beidou single-frequency cycle-slip detection method, which belongs to the field of Beidou navigation and positioning data processing. Background technique [0002] The Beidou navigation system has been fully networked and will provide global users with positioning, navigation, timing and short message communication services. Because of its important significance and wide application value, my country is vigorously developing and improving related technologies, such as error analysis and processing, cycle slip detection and repair, and integer ambiguity resolution. Among them, cycle slip detection is a very important link in high-precision BDS data processing. Cycle slips of 10 cycles and above in carrier phase data are easy to be found, while cycle slips of less than 10 cycles, especially those of 1 to 5 cycles Small cycle slips are not easy to detect. Polynomial fitting method, high order difference method, ionospheric res...

Claims

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Application Information

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IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 邹金慧柏粉花高杨吴建德王晓东范玉刚黄国勇
Owner KUNMING UNIV OF SCI & TECH
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