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Analytical method for testing data of space-borne dual-frequency GPS (Global Position System) receiver

A technology for GPS receivers and test data, which is applied to measuring devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems of low update rate and can no longer meet the test requirements, so as to improve the accuracy of data analysis, The effect of improving work efficiency

Active Publication Date: 2013-06-05
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

Due to the limitation of telemetry format layout, the update rate of GPS measurement data in the whole satellite telemetry data packet is relatively low, usually a packet of data is updated in tens of seconds, so the GPS measurement data obtained during the ground test usually have a large Time interval, with the continuous improvement of the satellite's positioning accuracy requirements for dual-frequency GPS receivers, this method can no longer meet the current testing requirements

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  • Analytical method for testing data of space-borne dual-frequency GPS (Global Position System) receiver
  • Analytical method for testing data of space-borne dual-frequency GPS (Global Position System) receiver
  • Analytical method for testing data of space-borne dual-frequency GPS (Global Position System) receiver

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Embodiment Construction

[0009] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] Technical solution of the present invention is:

[0011] Step 1, introduce the bus monitor in the test process of the dual-frequency GPS receiver, receive and store the test data generated by the dual-frequency GPS receiver in real time according to the frequency of 1 Hz through the bus monitor;

[0012] Step 2, the ground computer extracts the test data of a certain period of time stored by the bus monitor, and organizes and arranges the test data, that is, the star time t in the test data, the three-axis coordinates of space (X, Y, Z), The operating speed (Vx, Vy, Vz) and pseudorange and carrier phase are extracted, and rearranged according to the format of the theoretical data generated in the GPS simulator;

[0013] Step 3. Analyze the positioni...

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Abstract

The invention discloses an analytical method for testing data of a space-borne dual-frequency GPS (Global Position System) receiver; the analytical method comprises the following steps of: introducing a bus monitor in the testing process of the dual-frequency GPS receiver, and receiving and storing the testing data generated by the dual-frequency GPS receiver in real time according to the frequency of 1Hz through the bus monitor; extracting the testing data stored by the bus monitor at a certain time slot by using a ground-based computer, and carrying out format regulation and arrangement on the testing data, i.e. extracting start time t, spatial three-axis coordinates (X, Y, Z), running speeds (Vx, Yy, Vz), pseudo-ranges and carrier phases in the testing data, and rearranging the start time t, spatial three-axis coordinates (X, Y, Z), running speeds (Vx, Yy, Vz), pseudo-ranges and carrier phases according to the generation format of theory data in a GPS simulator; and respectively analyzing the accuracy of the locating data, the pseudo-ranges and the carrier phases; and the method increases the accuracy of data analysis after events.

Description

technical field [0001] The invention relates to the technical field of satellite-borne data analysis, in particular to a method for analyzing test data of a satellite-borne dual-frequency GPS receiver. Background technique [0002] The positioning accuracy of the dual-frequency GPS receiver is an important indicator related to the post-event analysis of remote sensing data, and its importance to the entire satellite design is self-evident. At present, the method commonly used in China is to analyze the accuracy of the GPS measurement data in the whole satellite telemetry data package. Due to the limitation of telemetry format layout, the update rate of GPS measurement data in the whole satellite telemetry data packet is relatively low, usually a packet of data is updated in tens of seconds, so the GPS measurement data obtained during the ground test usually have a large Time interval, with the continuous improvement of the satellite's positioning accuracy requirements for d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
Inventor 张亮于忠江马舒洁徐健
Owner BEIJING INST OF SPACECRAFT SYST ENG
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