Low-orbit satellite full-arc-segment orbit determination method based on high-orbit communication satellite

A technology for low-orbit satellites and communication satellites, applied in the field of satellite orbit determination, can solve the problems of weak GNSS communication function, over-reliance on GNSS, and unfavorable reliability of low-orbit constellation orbit determination, so as to reduce the number and achieve the effect of fusion.

Active Publication Date: 2020-04-10
NAT TIME SERVICE CENT CHINESE ACAD OF SCI +1
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  • 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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  • Low-orbit satellite full-arc-segment orbit determination method based on high-orbit communication satellite
  • Low-orbit satellite full-arc-segment orbit determination method based on high-orbit communication satellite
  • Low-orbit satellite full-arc-segment orbit determination method based on high-orbit communication satellite

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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 multi...

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 Applications(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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