Satellite navigation positioning carrier phase cycle slip rehabilitation method

A carrier phase and repair method technology, which is applied in the field of satellite navigation and positioning, achieves the effects of good market application prospects, wide practicability, and simple and convenient calculation process

Inactive Publication Date: 2008-12-31
INST OF ELECTRONICS & INFORMATION ENG IN
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Problems solved by technology

[0010] The invention provides a method for repairing the cycle slip of the carrier phase in satellite navigation and positioning, so as to solve the problem of accurate repair of the cycle slip in the single-point precise positioning of the receiver, so as to realize fast and accurate single-point positioning

Method used

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  • Satellite navigation positioning carrier phase cycle slip rehabilitation method
  • Satellite navigation positioning carrier phase cycle slip rehabilitation method
  • Satellite navigation positioning carrier phase cycle slip rehabilitation method

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Embodiment Construction

[0015] A method for repairing cycle slip of carrier phase in satellite navigation and positioning provided by the present invention, such as figure 1 As shown, assume that a cycle slip occurs at the n+1th epoch, and there is no cycle slip in the n epochs before the n+1th epoch, where: n is a natural number, and its value range is [7, 15]. Proceed as follows:

[0016] The first step: the carrier phase observation sequence {X t} modeling, get a residual sequence {Y t} and predicted values ​​with trend components The specific implementation process is as follows:

[0017] (1) the sequence {X t} Carry out an accumulation to generate a sequence {X t 1}:

[0018] x k 1 = Σ i = 0 k x i k = 1,2 , · · · n ...

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Abstract

The invention discloses a cycle slip repair method of carrier phase in the satellite navigation positioning, belonging to the technical field of satellite navigation positioning and relating to the cycle slip repair method of a positioning receiver based on the carrier phase positioning process. The phase observation values of n epochs of carriers before the occurrence of the cycle-slip are selected to constitute a sequence (Xt), the (Xt) is firstly carried out with the modeling to obtain a forecast value x n plus 1 of the trend component and a first residual sequence (Yt); the first residual sequence (Yt) is then carried out with the modeling to obtain the forecast value y n plus 1 of the periodic component and a second residual sequence (Zt); then the second residual sequence (Zt) is carried out with the modeling to obtain the forecast value z n plus 1 containing the random component; the corresponding inverse transformation is finally carried out according to the forecast values obtained by various models, thereby obtaining the forecast value x n plus 1 of the carrier phase of the n plus 1st epoch at the occurrence of the cycle-slip and further completing the repair of the cycle-slip. The cycle slip repair method does not need the additional auxiliary information and can rapidly and accurately complete the cycle slip repair. The cycle slip repair method can rapidly, conveniently and reliably realize the high-precision positioning of the carrier phase measurement and can be widely applied in a high-precision navigation positioning system.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation and positioning, and relates to a cycle-slip repairing method in the positioning process of a positioning receiver based on carrier phase. Background technique [0002] In satellite navigation and positioning, it mainly includes carrier phase positioning and pseudo-range positioning. Pseudo-range positioning method is simple and convenient to calculate, but the positioning accuracy is low; while carrier phase positioning, its carrier phase observation accuracy is much higher than pseudo-range measurement value, its absolute positioning accuracy can reach centimeter level, and relative positioning accuracy can reach millimeter level. In high-precision positioning receivers, it is common to perform positioning based on carrier phase measurements. [0003] The principle of carrier phase measurement: determine the propagation distance of the signal according to the phase change value of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/02G01S1/04G01S5/02G01S5/14G01S19/27
Inventor 陈小平藤云龙
Owner INST OF ELECTRONICS & INFORMATION ENG IN
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