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Inter-satellite ranging method based on quantum light sources on satellites and reflector

A technology of inter-satellite ranging and mirrors, applied in the field of satellite autonomous navigation, can solve problems such as limiting measurement accuracy and safety, and achieve high safety and high measurement accuracy

Active Publication Date: 2014-07-23
BEIJING INST OF CONTROL ENG
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Problems solved by technology

However, the development of traditional radio ranging methods based on classical theories has an insurmountable limit, which limits the further improvement of measurement accuracy and safety.

Method used

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  • Inter-satellite ranging method based on quantum light sources on satellites and reflector
  • Inter-satellite ranging method based on quantum light sources on satellites and reflector
  • Inter-satellite ranging method based on quantum light sources on satellites and reflector

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Embodiment Construction

[0023] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The current constellation for learning that autonomous navigation mainly relies on the method based on inter-satellite distance measurement. For example, the autonomous navigation system equipped on the GPS satellite uses the radio ranging information between the satellites to correct the position, which can be used in the case of interruption of communication with the ground control center. Work independently for a while. In order to solve the problems existing in the measurement accuracy and safety of the traditional inter-satellite ranging method, the present invention proposes an inter-satellite ranging method based on the quantum light source and reflector on the star, and realizes high precision through the new signal form of entangled photons High security requirements. On this basis, applying the principle of absolute o...

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Abstract

The invention provides an inter-satellite ranging method based on quantum light sources on satellites and a reflector. The quantum light sources on the satellites and a quantum measuring device are arranged on a user satellite and used for generating and emitting entangled-state photon pulse signals, the reflector and a pointing mechanism are arranged on a beacon satellite and used for reflecting the received entangled-state photon pulse signals to the user satellite, and the user satellite measures the high-precision distance between the user satellite and the beacon satellite by measuring the difference of arrival times of the emitted entangled-state photon pulse signals and the reflected entangled-state photon pulse signals. By means of the method, constellation satellite autonomous navigation tasks based on measurement of inter-satellite distances can be achieved, the degree of dependence of the satellites on the ground measurement and control can be reduced, and the autonomous viability of a constellation system under emergency conditions can be enhanced.

Description

technical field [0001] The invention relates to an inter-satellite ranging method based on an on-board quantum light source and a reflector, and belongs to the technical field of satellite autonomous navigation. Background technique [0002] With the continuous increase of space missions and the wide application of satellite constellation systems in the economy and military, the national economy and national defense have put forward higher requirements for spacecraft navigation and control systems, and it has become an urgent need to improve the autonomous navigation capabilities of constellation satellites , realizing full or partial autonomy is the development trend of the new generation satellite constellation system. Realizing the autonomous navigation of constellation satellites can not only reduce the demand for ground manpower, material resources and equipment, and reduce the cost of the space program, but more importantly, when the information transmission between th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08
CPCG01S7/4865G01S17/08
Inventor 熊凯魏春岭何英姿
Owner BEIJING INST OF CONTROL ENG
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