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Method for improving PVT calculation speed of Beidou II satellite receiver

A technology for satellite receivers and calculation speed, applied in satellite radio beacon positioning systems, complex mathematical operations, instruments, etc., can solve the problems of increasing system loss, reducing system performance indicators, increasing hardware costs, etc., to improve calculation speed, Save system overhead and improve the effect of processing

Pending Publication Date: 2020-05-15
NANJING 6902 TECH +1
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  • Claims
  • Application Information

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Problems solved by technology

However, these methods will have impacts such as increasing hardware costs, reducing system performance indicators, or increasing system loss.

Method used

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  • Method for improving PVT calculation speed of Beidou II satellite receiver
  • Method for improving PVT calculation speed of Beidou II satellite receiver
  • Method for improving PVT calculation speed of Beidou II satellite receiver

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0019] In this embodiment, in order to ensure smooth PVT calculation, it is necessary to first determine that the current BDS-2 receiver is in a normal PVT calculation state, that is, the BDS-2 receiver can continuously and stably output local PVT calculation results. After confirming that the receiver is in the normal PVT calculation state, perform PVT calculation.

[0020] Such as figure 1 , the specific process of the method for improving the PVT calculation speed of the Beidou No. 2 satellite navigation receiver of the present embodiment includes:

[0021] Step 1: Sort the satellites and traverse the satellites in order, and execute steps (1) to (3) for each satellite traversed. Wherein, sorting the satellites includes sorting according to the satellite acquisition channel number of the receiver. For example, the sequence number of the satellite captured by cha...

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Abstract

The invention discloses a method for improving the PVT calculation speed of a Beidou No.2 satellite receiver. The method comprises the steps: calculating the position, speed and pseudo-range correction of each satellite through employing a round robin method, and calculating the position, speed and time of a user based on the calculated position, speed and pseudo-range correction of each satellite. In the process of using the round-robin method, the round-robin method is used; when the time interval between the calculation time calculated through the broadcast message last time and the currenttime is smaller than a threshold value, the current satellite position and speed are calculated based on the satellite position, speed and acceleration calculated through the broadcast message last time and the first time interval, and otherwise, the current satellite position and speed are calculated through the broadcast message; and when the time interval between the time when the pseudo-rangecorrection value is obtained last time and the current time is smaller than a second threshold value, continuously using the pseudo-range correction value obtained last time, otherwise, obtaining a new pseudo-range correction value again. According to the invention, the system operand is greatly reduced, and the operation speed is improved.

Description

technical field [0001] The invention belongs to the technical field of satellite receiver PVT (Position-Velocity-Time) calculation, and in particular relates to a method for improving the PVT calculation speed of Beidou No. 2 satellite receiver. Background technique [0002] With the gradual maturity of the Beidou satellite navigation system, a number of companies developing the Beidou system have emerged in China, and have developed satellite positioning basebands and radio frequency chips with independent intellectual property rights based on different applications. With the development of technology, it is an inevitable trend for the user segment of the Beidou system to move from systematization and terminalization to modularization and chip-based. [0003] The Beidou-2 satellite navigation system single model (RNSS) embedded module fully utilizes and draws on the existing technology and achievements of the Beidou-2 general-purpose model, and adopts the domestic military ...

Claims

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Application Information

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IPC IPC(8): G06F17/10G01S19/27G01S19/30G01R13/00
CPCG06F17/10G01S19/27G01S19/30G01R13/00
Inventor 陈雨秦伟周新建成文婧高攀
Owner NANJING 6902 TECH
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