An optical comb and signal modulation multiplexing terminal and method that can be used for the integration of distance measurement and communication
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A signal modulation and optical comb technology, which is applied in satellite communication transmission, digital transmission system, error prevention and other directions to achieve the effect of solving high-reliability space optical network communication, improving flexibility and reliability, and improving reliability.
Active Publication Date: 2020-09-04
BEIJING SATELLITE INFORMATION ENG RES INST
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[0008] The problem to be solved by the invention is to solve the problem of using the same wavelength range for inter-satellite precision ranging and broadband communication and to improve the reliability of inter-satellite ranging and communication
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[0033] Hereinafter, the present invention will be described in detail based on the drawings.
[0034] Such as figure 1 As shown, the present invention designs an optical comb and signal modulation multiplexing terminal that can be used for distance measurement and communication, mainly including: control unit 101, femtosecond optical comb module 102, signal modulation and demodulation module 103, optical coupler B 104, emission optical path 105, servo drive 106, CCD camera 107, pointing alignment system 108, telescope system 109, beam splitter A110, beam splitter D 111, photoelectric detection module A112, signal light source 113, beacon light source 114, mirror C 115, mirror B 116, electric amplifier 117, electric phase-locked loop 118, photoelectric detection module B 119, optical coupler A120.
[0035] According to different application environments of inter-satellite ranging, the femtosecond optical comb module 102 can work in different application strategies and working ...
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Abstract
The invention relates to an optical comb and signal modulation multiplexing terminal and method capable of being used for distance measurement and communication integration. A terminal includes: a terminal; The system comprises a control unit, a signal light source, a beacon light source, a femtosecond optical comb module, an optical coupler A, an optical coupler B, a photoelectric detection module A, a photoelectric detection module B, an electric amplifier, an electric phase-locked loop, a signal modulation and demodulation module, an optical light path, a pointing alignment system, a spectroscope A, a spectroscope B, a spectroscope D, a telescope system, a reflector C, a CCD camera and a servo driver. And by adjusting the light emitting power of the optical comb signal of the transmitting end, the transmitting end obtains a precise distance measurement signal between the two terminals so as to ensure the distance measurement function. According to the invention, the optical comb isused as the basis of inter-satellite precise distance measurement, the inter-satellite precise distance measurement and broadband communication are simultaneously realized by adopting one set of lightbeam tracking and aiming device, the reliability and the multifunction are high, and the flexibility of a future space optical network can be improved.
Description
technical field [0001] The invention belongs to the technical field of space laser communication, and relates to an optical comb and signal modulation multiplexing terminal and method that can be used for ranging communication integration. Background technique [0002] Space optical communication has the advantages of large communication capacity, small antenna size and good confidentiality, and has become an important technical means for high-speed space communication in the future. In order to realize the high-precision observation of the Earth on the satellite and the inversion of the ground gravitational field and the gravitational field, it is necessary to realize the high-precision distance measurement between the satellites. Since both high-precision ranging and broadband communication between satellites need to maintain accurate alignment, if the integrated design of ranging and communication can be realized, the volume, weight and power consumption burden on the sat...
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