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Carrier phase integer ambiguity resolving method of GNSS reference station

A technology of integer ambiguity and carrier phase, applied in the field of satellite positioning system and positioning measurement

Pending Publication Date: 2019-04-05
LIAONING TECHNICAL UNIVERSITY
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Then determine the double-differenced raw carrier-phase integer ambiguity

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  • Carrier phase integer ambiguity resolving method of GNSS reference station
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  • Carrier phase integer ambiguity resolving method of GNSS reference station

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[0090] The invention will be further described below in conjunction with accompanying drawings and specific implementation examples:

[0091] A GNSS reference station carrier phase integer ambiguity resolution method, the method flow chart is as follows figure 1 shown, including the following steps:

[0092] Step 1. Each satellite of the GNSS broadcasts multi-frequency non-difference carrier phase observation data and non-difference pseudorange observation data to the reference station GNSS receiver. The distribution of the reference station network is as follows: figure 2 shown. Currently, the main GNSS systems available are GPS and BDS. The receiver of the reference station is a GPS / BDS receiver, and the non-difference pseudo-range observation equation of the first frequency and the non-difference pseudo-range observation equation of the second frequency of the GPS / BDS satellite received by the GPS / BDS receiver of the reference station are respectively:

[0093]

[00...

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Abstract

The invention provides a carrier phase integer ambiguity resolving method of a GNSS reference station. The carrier phase integer ambiguity resolving method of the GNSS reference station comprises thesteps that non-differential carrier phase observed value data and non-differential pseudo-distance observed value data transmitted by a GNSS satellite are received by a GNSS receiver of a reference station; an ionosphere delay error is calculated; a satellite clock error, a satellite orbit error, a troposphere delay error and a GNSS receiver clock error are calculated; a non-differential combination integer ambiguity value of a first frequency non-differential carrier phase observed value and a second frequency non-differential carrier phase observed value is calculated; a dual-differential combination integer ambiguity of a first frequency carrier phase observed value and the second frequency carrier phase observed value is calculated; a first frequency dual-differential carrier phase integer ambiguity is calculated and determined; and a dual-differential observed error of the GNSS reference station is calculated. According to the carrier phase integer ambiguity resolving method of the GNSS reference station, the ineffectiveness of previous dual-differential wide-lane ambiguity calculating information due to the fact that a single satellite is lost in a period can be avoided, andthe problem that in the cycle slip detection of a dual-differential observed value, which non-differential observed value has cycle slip cannot be determined after the cycle slip occurs is avoided.

Description

technical field [0001] The invention belongs to the technical field of satellite positioning systems and positioning measurement, and in particular relates to a method for solving the ambiguity of the carrier phase of a GNSS reference station. Background technique [0002] At present, Global Navigation Satellite Systems (GNSS) widely provide positioning services, mainly including GPS in the United States, GLONASS in Russia, and BDS in my country. The GPS system of the United States is currently the most mature and stable global satellite navigation system. The BeiDou Navigation Satellite System (BDS for short), which has my country's independent intellectual property rights, has also officially provided navigation and positioning services to the Asia-Pacific region; due to various observation errors The standard positioning services provided by GNSS systems such as BDS and GPS have meter-level accuracy, which can only meet the requirements of low-precision navigation and posi...

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44Y02A90/10
Inventor 祝会忠李军徐宗秋徐爱功徐彦田李博
Owner LIAONING TECHNICAL UNIVERSITY
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