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Navigation method and terminal

A navigation method and a navigation signal technology, applied in the field of navigation

Active Publication Date: 2014-07-23
BEIJING BDSTAR NAVIGATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to organically combine satellite navigation and inertial navigation to obtain navigation accuracy and reliability superior to any single navigation system

Method used

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  • Navigation method and terminal
  • Navigation method and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0141] Embodiment 1. A navigation method, such as figure 1 shown, including:

[0142] Receive Beidou satellite navigation signals, receive internal radio frequency and baseband chip data, and obtain Beidou satellite navigation preprocessing data after PVT (position, velocity, time) processing;

[0143] Obtaining original inertial measurement data, performing calculation on the original inertial measurement data by using a strapdown inertial navigation algorithm, and obtaining a calculation result;

[0144] Acquire external observation information, and calculate error data according to the external observation information and the original inertial measurement data; the external observation information includes temperature, start-up time, etc.;

[0145] Combined navigation filtering is performed according to the Beidou satellite navigation preprocessing data, the error data and the calculation result, and the filtering result is output.

[0146] This embodiment can also synchr...

Embodiment 2

[0225] Embodiment 2. A navigation terminal, such as figure 2 As shown, the following modules are included:

[0226] The Beidou satellite navigation module is used to receive Beidou satellite navigation signals, receive internal radio frequency and baseband chip data, and obtain Beidou satellite navigation preprocessing data after PVT calculation and processing;

[0227] The inertial navigation module is used to obtain the original inertial measurement data; the strapdown inertial navigation algorithm is used to solve the original inertial measurement data to obtain the solution result;

[0228] An external observation module, configured to obtain external observation information, and calculate error data according to the external observation information and the original inertial measurement data; the external observation information includes temperature and start-up time;

[0229] The integrated navigation module is used to perform integrated navigation filtering according t...

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Abstract

The invention provides a navigation method and terminal. The navigation method includes the steps of receiving a Beidou satellite navigation signal, receiving internal radio frequency and base band chip data, and obtaining Beidou satellite navigation preprocessed data after position, speed and time resolving processing; obtaining external observation information and original inertia measurement data; calculating error data according to the external observation information and the original inertia measurement data, wherein the external observation information includes the temperature and the starting time; resolving the original inertia measurement data with a strapdown inertial navigation algorithm to obtain the resolving result; carrying out combined navigation filtering according to the Beidou satellite navigation preprocessed data, the error data and the resolving result, and outputting the filtering result. By means of the navigation method and terminal, satellite navigation and inertia navigation are organically combined, and the navigation accuracy and the navigation reliability which are superior to the navigation accuracy and the navigation reliability of any single navigation system are achieved.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a navigation method and a navigation terminal. Background technique [0002] The global satellite navigation system (GNSS) can provide all-weather, continuous and precise three-dimensional positioning and navigation services on a global scale. It has been widely used in the navigation and positioning of aviation, spaceflight, navigation and ground vehicles. The independently developed and independently operated global satellite navigation system implemented is an independent, open and compatible, technologically advanced, stable and reliable satellite navigation system. The outstanding advantage of the Beidou satellite navigation system is that its navigation and positioning accuracy is high, and the navigation and positioning accuracy is basically not limited by time and region. However, when the satellite signal is blocked or interfered, its advantages cannot be brought into play, an...

Claims

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Application Information

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IPC IPC(8): G01S19/49
CPCG01C21/165G01S19/49
Inventor 不公告发明人
Owner BEIJING BDSTAR NAVIGATION CO LTD
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