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GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device

A cycle-slip detection and non-difference technology, which is applied in the field of satellite navigation and positioning, can solve problems such as difficult detection and accurate repair, no consideration of GPS satellite altitude angle factors, and high false detection rate of low-altitude angle cycle slips.

Inactive Publication Date: 2015-07-01
WUHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a GPS dual-frequency non-difference cycle-slip detection and repair method and device, which are used to solve the problems caused by GPS satellite elevation angle factors and polynomial fitting errors in the prior art. Low altitude angle cycle slip high false detection rate, difficult to detect and accurately repair the technical problems of small cycle slips

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  • GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device
  • GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device
  • GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device

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Embodiment 1

[0049] This embodiment provides a GPS dual-frequency non-difference cycle slip detection method and a cycle slip repair method, such as figure 1 As shown, the main steps are:

[0050] Step 110, read the GPS observation value, and generate the first detection quantity and the second detection quantity according to the GPS observation value.

[0051] In this step, the GPS observation value is read from the GPS original observation file, and the GPS observation value is respectively generated into a first detection amount and a second detection amount; wherein, the GPS original observation file is directly formed after receiving the GPS satellite signal; The original GPS observation file is generally a RINEX format O (observation) file, and the GPS observation file includes observations such as pseudorange and carrier phase.

[0052] Then, through the preset reading program, the required GPS observation value is read out, and the GPS observation value is generated into the first...

Embodiment 2

[0102] This embodiment provides a GPS dual-frequency non-difference cycle slip detection and repair device, such as figure 2 As shown, it includes: a reading module 21 , a detecting module 22 , an analyzing module 23 and a repairing module 24 .

[0103] The reading module 21 is used to read the GPS observation value, and generate the first detection quantity and the second detection quantity according to the GPS observation value.

[0104] Specifically, the reading module 21 reads the GPS observation value from the GPS original observation file, and generates the first detection quantity and the second detection quantity respectively from the GPS observation value; wherein, the GPS original observation file is obtained directly after receiving the GPS satellite signal. Formed; the original GPS observation file is generally a RINEX format O (observation) file, and the GPS observation file includes: pseudorange, carrier phase and other observations.

[0105] Then, through the ...

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Abstract

The invention discloses a GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device. The method includes: reading a GPS observing value, and generating first detection quantity and second detection quantity according to the GPS observing value; utilizing a self-adaptive sliding window model to smooth the first detection quantity, adjusting the first detection quantity after being smoothed according to a first cycle slip judgment threshold value for cycle slip detection to acquire a first detection result; utilizing a epoch difference-solving method for difference solving of the second detection quantity to generate third detection quantity, and performing cycle slip detection on the third detection quantity to acquire a second detection result; analyzing the first detection result and the second detection result, and calculating the first detection quantity and the second detection quantity at a cycle slip epoch to acquire a first cycle slip value and a second cycle slip value; restoring the GPS observing value according to the cycle slip values. By the GPS dual-frequency non-difference cycle slip detecting and restoring method and device, cycle slip detection success rate and cycle slip restoring accuracy can be improved, so that needs on high-accuracy positioning of GPS navigation can be met, and small cycle slip, big cycle slip, special cycle slip and continuous cycle slip can be detected and restored.

Description

technical field [0001] The invention relates to the technical field of satellite navigation and positioning, in particular to a GPS (Global Positioning System, Global Positioning System) dual-frequency non-difference cycle slip detection and repair method and device. Background technique [0002] At present, in the field of satellite navigation technology, cycle slip detection and repair is the key issue in the preprocessing stage of GPS satellite navigation and positioning data, which has a significant impact on parameter estimation and calculation efficiency in data network adjustment, and determines the accuracy of GPS high-precision positioning orbit determination. Effect. [0003] At the same time, under the condition that the research and application of GPS precise point positioning (PPP, Precise Point Positioning) technology become more and more extensive, the non-phase difference algorithm is also becoming more and more important. However, because the non-difference...

Claims

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Application Information

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IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 苏明坤郑建生杨艳茜陈鲤文
Owner WUHAN UNIV
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