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A real-time satellite navigation simulation method and device

A satellite navigation and simulation method technology, applied in the field of satellite navigation, can solve problems such as the real-time separation of satellite navigation, and achieve the effects of facilitating the verification of functions and performance, simplifying the satellite navigation testing process, and eliminating frequency errors.

Active Publication Date: 2019-03-19
北京华力创通科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the satellite signal simulator usually realizes the satellite navigation function of virtual time, which is separated from the real-time real satellite system. It needs to assume the simulated navigation data of a certain period of time and a certain area, which is separated from the real-time nature of satellite navigation.

Method used

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  • A real-time satellite navigation simulation method and device
  • A real-time satellite navigation simulation method and device
  • A real-time satellite navigation simulation method and device

Examples

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Embodiment 1

[0050] Such as figure 1 As shown, taking China's BeiDou Navigation Satellite System (BeiDou Navigation Satellite System, referred to as BDS) as an example, the embodiment of the present invention provides a real-time satellite navigation simulation method, which mainly includes the following steps:

[0051] S1: Obtain the current universal time and location information of the test location. It specifically includes the following two steps: S11 and S12.

[0052] S11: Receive the radio frequency channel link of the satellite system.

[0053] Specifically, the test site uses an antenna to connect to a common receiver in the field of satellite navigation, uses the receiver for positioning, and receives the radio frequency channel link of the Beidou second-generation satellite navigation system with high-frequency electromagnetic waves with long-distance transmission capabilities. The RF chip design is dedicated to the Beidou second-generation satellite navigation system.

[005...

Embodiment 2

[0085] Such as figure 2 As shown, the embodiment of the present invention provides a real-time satellite navigation simulation device 20 , including an antenna 21 , a network time protocol timing server 22 and a simulator 23 .

[0086] Wherein, the network time protocol timing server 22 is used to obtain the current universal time and the location information of the test site through the antenna 21, and use the current universal time to generate the first second pulse synchronized with the current universal time.

[0087] The simulator 23 is used to generate a 10MHz signal that is coherent with the first second pulse, utilizes the current universal time and the location information of the test site to generate visible satellite navigation data in real time, and guarantees the baseband frequency, first second pulse and 10MHz of the satellite navigation test results Signals are all three.

[0088] Specifically, the network time protocol timing server 22 includes a receiver, wh...

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Abstract

The invention provides a real-time satellite navigation simulation method and real-time satellite navigation simulation equipment, belongs to the satellite navigation technology field, can realize a real-time actual satellite navigation signal simulation function, generates the real-time satellite navigation data so as to realize simulation source tests in the actual environment, is convenient for a system to realize function and performance verification and simplifies a satellite navigation test flow. The method comprises steps that the present world standard time and the test place position information are acquired; a first second pulse in synchronization with the present world standard time is generated through utilizing the present world standard time, and an internal frequency source signal consistent with the first second pulse is further acquired; the present world standard time and the test place position information are utilized to generate the real-time visible satellite navigation data, and base-band frequency, the first second pulse and and an internal frequency source signal of a satellite navigation test result are guaranteed to be consistent.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a real-time satellite navigation simulation method and equipment. Background technique [0002] The Beidou second-generation satellite navigation system is a regional satellite navigation system independently built by my country. The distribution of the satellite constellation of the Beidou second-generation satellite navigation system makes it possible to travel anywhere within the service area of ​​0°~55°N and 55°~180°E. More than 4 satellites can be observed at any time. [0003] With the rapid development and growth of the satellite navigation and positioning service industry, Beidou satellite navigation and location service products have formed a complete industrial chain and have begun to take shape. At the same time, the standardization system construction of Beidou satellite navigation and location service products in my country is also Fast follow-up and cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/20G01S19/23
CPCG01S19/20G01S19/23
Inventor 李夏
Owner 北京华力创通科技股份有限公司
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