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Positioning domain MRCC (Multiple Reference Consistency Check) method and device of sea-based JPALS (Joint Precision Approach and Landing System)

A baseline and reference technology, applied in the field of satellite navigation, can solve the problems of obtaining pseudo-range or carrier phase observation values, and the absolute position of the reference receiver cannot be accurately obtained, so as to achieve the effect of improving monitoring performance

Inactive Publication Date: 2017-12-22
BEIHANG UNIV
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Problems solved by technology

[0006] For SB-JPALS, since the hull is moving, the absolute position of the reference receiver cannot be accurately obtained, and the correction value of the corresponding pseudorange or carrier phase observation value cannot be obtained by making a difference between the measured value and the real value. Therefore, GBAS and MRCC methods for LB-JPALS are not applicable for SB-JPALS

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  • Positioning domain MRCC (Multiple Reference Consistency Check) method and device of sea-based JPALS (Joint Precision Approach and Landing System)

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[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] The system composition of SB-JPALS is as follows: figure 1 As shown, it consists of an independent shipboard subsystem and an airborne subsystem. The shipboard subsystem includes multiple Global Navigation Satellite System (GNSS) reference receivers, an inertial navigation system and a UHF broadcast data transceiver system, and processing ...

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Abstract

The embodiments of the present invention provide a positioning domain MRCC (Multiple Reference Consistency Check) method and device of a sea-based JPALS (Joint Precision Approach and Landing System). The method includes the following steps that: the estimator of each baseline vector which is formed by every two reference receivers in at least two reference receivers is calculated according to the dual-band satellite original pseudorange observed quantity and dual-band satellite original carrier phase observed quantity of each of the at least two reference receivers; B values corresponding to the baseline vectors are calculated according to the actual values of the baseline vectors each of which is formed by every two reference receivers and the estimators of the baseline vectors; a check threshold value is generated according to the sampling data of the pre-obtained B values; and whether the at least two reference receivers malfunction is judged according to the B values corresponding to each of the baseline vectors and the check threshold value. The positioning domain MRCC method for receiver fault monitoring is provided, and the integrity monitoring performance of a ship-borne terminal can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of satellite navigation, and in particular to a sea-based JPALS positioning domain MRCC method and device. Background technique [0002] The Joint Precision Approach and Landing System (JPALS) is a military all-weather high-precision precision approach and landing system developed by the US Department of Defense and developed by Raytheon Corporation, a large US defense contractor. It mainly includes two forms: land-based JPALS (Land Based-JPALS, LB-JPALS for short) and sea-based JPALS (Sea Based-JPALS, SB-JPALS). Among them, the principle of LB-JPALS is similar to that of the Ground Based Augmentation System (GBAS), the main difference is that the satellite navigation signal used by GBAS is a civil code, such as the C / A code of GPS, and is mainly used in the field of civil aviation, while JPALS uses military codes, such as the dual-frequency P code of GPS, and is mainly aimed at the mi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23G01S19/37G01S19/51
CPCG01S19/23G01S19/37G01S19/51
Inventor 王志鹏朱衍波张悦
Owner BEIHANG UNIV
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