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A full-arc orbit determination method for low-orbit satellites based on high-orbit communication satellites

A low-orbit satellite and communication satellite technology, applied in the field of satellite orbit determination, can solve the problems of weak GNSS communication function, excessive dependence on GNSS, unfavorable reliability of low-orbit constellation orbit determination, etc., and achieve the effect of integration and reduction of quantity

Active Publication Date: 2020-09-25
NAT TIME SERVICE CENT CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the GNSS communication function is weak, and the excessive dependence on GNSS is not good for the reliability of low-orbit constellation orbit determination

Method used

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  • A full-arc orbit determination method for low-orbit satellites based on high-orbit communication satellites
  • A full-arc orbit determination method for low-orbit satellites based on high-orbit communication satellites
  • A full-arc orbit determination method for low-orbit satellites based on high-orbit communication satellites

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Effect test

Embodiment 1

[0047] See figure 1 and figure 2 , figure 1 It is a flow chart of a method for determining the orbit of a low-orbit satellite based on a high-orbit communication satellite in an entire arc segment provided by an embodiment of the present invention; figure 2 It is a schematic diagram of the working process of a method for determining the orbit of a low-orbit satellite based on a high-orbit communication satellite in an entire arc segment provided by an embodiment of the present invention.

[0048] The low-orbit satellite full-arc orbit determination method of the present embodiment includes:

[0049] S1: establish a space-time reference;

[0050] S2: Obtain orbit coordinates of multiple high-orbit communication satellites respectively;

[0051] S3: Using the low-orbit satellites to respectively receive signals transmitted by the same ground master control station and forwarded by the multiple high-orbit communication satellites, and obtain the time delay values ​​of multipl...

Embodiment 2

[0096] On the basis of the above-mentioned embodiments, this embodiment proposes another method for determining orbits of low-orbit satellites in the entire arc based on high-orbit communication satellites, including a ground master control station, multiple high-orbit communication satellites and low-orbit satellites.

[0097] Preferably, the plurality of high-orbit communication satellites are all GEO satellites or IGSO satellites. Correspondingly, the low-orbit satellite is equipped with a signal receiver, and the signal receiver is used to receive the signal transmitted by the ground master control station and forwarded by the GEO satellite or the IGSO satellite.

[0098] In this embodiment, the method includes:

[0099] Step 1: Establish a space-time reference;

[0100] Specifically, to establish a time and space reference, it is necessary to precisely measure the coordinates of the ground master control station in advance and trace the atomic clock time of the ground ma...

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Abstract

The invention discloses a low-orbit satellite full-arc-segment orbit determination method based on a high-orbit communication satellite. The method comprises the following steps: establishing a space-time reference; respectively acquiring orbit information of a plurality of high-orbit communication satellites; respectively receiving signals transmitted by the ground master control station and forwarded by the plurality of high-orbit communication satellites by using a low-orbit satellite and the ground master control station, and obtaining time delay values of propagation of a plurality of groups of signals; calculating pseudo-range values of the plurality of high-orbit communication satellites and the low-orbit satellite; and according to the pseudo-range values of the plurality of high-orbit communication satellites and the low-orbit satellite, calculating an orbit coordinate and a clock error of the low-orbit satellite. According to the method, the high-orbit and high-orbit communication satellites are utilized, full-arc-segment tracking can be basically achieved for the low-orbit satellites, the method is a high-efficiency low-orbit satellite orbit determination method, and thenumber of low-orbit satellite users is not limited.

Description

technical field [0001] The invention belongs to the technical field of satellite orbit determination, and in particular relates to a method for determining the orbit of a low-orbit satellite based on a high-orbit communication satellite. Background technique [0002] Low-orbit satellites play an irreplaceable role in the fields of Earth's gravity field measurement, high-precision surveying and mapping, and earth resource exploration. In recent years, with the rapid development of modern mobile communication and electronic components technology, some obstacles restricting early low-orbit satellite communication have been gradually eliminated, making the application of low-orbit satellites in the field of communication increasingly mature. With the continuous expansion of low-orbit satellite application fields, the real-time and high-precision requirements for its orbit determination are also getting higher and higher. At present, the orbit determination of low-orbit satellit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/24
CPCG01C21/24
Inventor 丁硕王源盺王霄韦沛苏行杨旭海孙保琪秋宏兴李志刚
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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