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Positioning and time service method and device for spaceborne navigation receiver based on orbital element prediction

A technology of navigation receiver and orbital number, which is used in measurement devices, satellite radio beacon positioning systems, radio wave measurement systems, etc.

Active Publication Date: 2019-03-26
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with low-orbit navigation receivers and traditional terrestrial navigation receivers, onboard navigation receivers for medium and high orbit satellites face greater challenges

Method used

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  • Positioning and time service method and device for spaceborne navigation receiver based on orbital element prediction
  • Positioning and time service method and device for spaceborne navigation receiver based on orbital element prediction
  • Positioning and time service method and device for spaceborne navigation receiver based on orbital element prediction

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Embodiment 1

[0039] According to an embodiment of the present invention, an embodiment of a positioning and timing method for an on-board navigation receiver based on prediction of orbital elements is provided. instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0040] figure 2 It is a positioning and timing method for spaceborne navigation receivers based on prediction of orbit elements according to an embodiment of the present invention, which is applied to spaceborne navigation receivers, such as figure 2 As shown, the method includes the following steps:

[0041] Step S102, determining the historical state quantities of the satellites carried by the on-board navigation receiver at historical epochs, wherein the historical state quantities include at least one of the following: historical position vectors, historical velocity vectors, historical ...

Embodiment 2

[0080] According to an embodiment of the present invention, another embodiment of a positioning and timing method for an on-board navigation receiver based on orbit element prediction is provided. Instructions are executed in a computer system and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0081] Figure 4 It is another positioning and timing method for spaceborne navigation receivers based on prediction of orbital elements according to an embodiment of the present invention, which is applied to spaceborne navigation receivers, such as Figure 4 As shown, the method includes the following steps:

[0082] S1, the on-board navigation receiver initializes the state quantity;

[0083] S2, the spaceborne navigation receiver collects navigation observations at the current epoch (that is, the second navigation observations in the above-mentioned embodi...

Embodiment 3

[0256] The embodiment of the present invention also provides a spaceborne navigation receiver positioning and timing device based on orbit element prediction, which is mainly used to implement the spaceborne navigation based on orbit element prediction provided by the above content of the embodiment of the present invention As for the receiver positioning and timing method, a spaceborne navigation receiver positioning and timing device based on orbit element prediction provided by an embodiment of the present invention will be specifically introduced below.

[0257] Figure 8 It is a schematic diagram of a spaceborne navigation receiver positioning and timing device based on orbit element prediction according to an embodiment of the present invention, as shown in Figure 8 As shown, the device mainly includes: an initial state quantity acquisition module 81, a first position and velocity calculation module 82, an observation variable transformation module 83, a second position...

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Abstract

The invention provides a positioning and time service method and device for a spaceborne navigation receiver based on orbital element prediction. The positioning and time service method is applied tothe spaceborne navigation receiver and comprises the steps of determining historical state variables of a satellite carried by the spaceborne navigation receiver at a historical epoch moment; calculating a target prediction variables of the carried satellite based on the orbital elements and the historical state variables of the carried satellite; determining a first navigation observation variable of the carried satellite based on the target prediction variables; calculating the first navigation observation variable of the carried satellite to obtain the current state variable of the carriedsatellite at the current epoch moment; determining the satellite time service moment of the carried satellite based on the current state variable; and enabling the satellite time service moment and the current state variable to serve as a navigation result of the carried satellite. The positioning and time service method improves the accuracy of the navigation positioning and time service result,and better meets the requirements of the applications such as medium and high-orbit beam directional communication loads for the on-orbit positioning and time service accuracy.

Description

technical field [0001] The present invention relates to the technical field of spaceborne navigation receivers, in particular to a positioning and timing method and device for spaceborne navigation receivers based on orbit element prediction. Background technique [0002] Global Navigation Satellite System (GNSS) has become the basic means for people to obtain position and timing information. Not only ground users need to use GNSS to provide timing navigation and positioning services, but also satellites with other functions in space, such as remote sensing satellites and communication satellites. The on-board navigation receiver can provide accurate position, velocity and time information for the host satellite, which is an important technical topic and development direction in the field of navigation. [0003] Satellites in medium and high orbits can also use on-board navigation receivers for positioning and timing. Compared with low-orbit navigation receivers and tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/27G01S19/29
CPCG01S19/27G01S19/29
Inventor 陈曦魏齐辉匡麟玲晏坚靳瑾倪祖耀
Owner TSINGHUA UNIV
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