A method for error detection of carrier phase measurement value of gnss receiver
A carrier phase and error detection technology, applied in the field of satellite navigation, can solve the problems of low error recognition accuracy and inability to detect carrier phase values, etc., to achieve the effects of improving detection accuracy and detection speed, strong practical value, and increasing implementation complexity.
Active Publication Date: 2019-04-02
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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[0004] The present invention proposes a method for detecting errors in carrier phase measurement values of GNSS receivers, with the purpose of proposing a fast and effective method to solve the problems that traditional methods cannot directly detect carrier phase values and have low error recognition accuracy
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[0025] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0026] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0027] figure 1 A receiver processing architecture suitable for the method of the present invention. GNSS receivers generally consist of four parts: antenna, RF front-end, digita...
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The invention provides an error detection method for carrier phase measurement values of a GNSS (Global Navigation Satellite System) receiver, and aims to provide a quick and effective method to solve a problem that the traditional method cannot perform detection on the carrier phase value directly and is low in error recognition accuracy. The error detection method comprises the steps of receiving satellite navigation signals, and extracting satellite observation quantities, wherein the satellite observation quantities comprise satellite carrier phase measurement values; performing positioning calculation on the satellite observation quantities; for satellites participating in positioning, and calculating the difference of a receiver external crystal oscillation frequency value and a receiver external oscillation frequency nominal value so as to act as a satellite inspection variable and be used for judging whether the satellite phase measurement values are correct or not; calculating a speed calculation residual error of each satellite participating in positioning; judging a satellite with the speed calculation residual error being the maximum or the minimum to be a satellite with the carrier phase measurement value going wrong; and processing the satellite with the carrier phase measurement value going wrong.
Description
technical field [0001] The present application relates to the technical field of satellite navigation, and in particular to a method for detecting and eliminating errors in the measured values of images broadcast by GNSS receivers. Background technique [0002] Global Navigation Satellite System (GNSS) can provide users with continuous, real-time, all-weather three-dimensional position, speed and time information on a global scale. GNSS plays an important role in both civilian and military fields, and has been widely used in aviation, aerospace, navigation, communications, vehicle navigation, missile guidance, geodesy, field rescue, consumer entertainment and many other fields. [0003] At present, the reasonable judgment of the carrier phase measurement value is generally realized through the lock-in detection of the tracking loop, such as checking the output power of the correlator, judging the signal carrier-to-noise ratio, and judging the I branch and Q branch amplitud...
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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 刘昌建周应强王景伟王林安谢淑香晁芳群刘李娟谷宇舒丁孝永
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT