Satellite spectrum sensing method and system based on equal-amplitude equal-interval multi-wavelength light source

Abstract

The invention discloses a satellite spectrum sensing method and system based on an equal-amplitude equal-interval multi-wavelength light source. Based on an equal-amplitude, equal-interval and multi-wavelength satellite spectrum sensing method, a photon technology is introduced into a spectrum sensing technology in the satellite navigation electric field, the equal-amplitude equal-interval and multi-frequency wavelength is used as the light source, the sensing of a microwave frequency channel is achieved on each optical wavelength, and meanwhile, an I / Q demodulation technology is combined to achieve high-precision sensing and treatment of a radio frequency signal. According to the method and system provided by the invention, the parallel multi-channel microwave frequency sensing is completed on an optical path, so that the volume and complexity of the system are greatly reduced; the method and system are applicable to strict requirements on the volume, weight and power consumption of an on-satellite system module in a satellite navigation system; the limitation of the traditional sensing device in the electric field on the losses of frequency bands close to the navigation system isbroken, and the problem of ultra wide band signal sensing and treatment of the satellite navigation system is solved.

Description

technical field [0001] The invention relates to the field of anti-interference and compatible interoperability of satellite navigation systems. Due to the harsh working environment in space, the satellite navigation system has strict restrictions on volume and weight, etc., and particularly relates to a parallel light source based on equal amplitude and equal intervals. Channel satellite sensing method and system. Background technique [0002] The Global Satellite Navigation System (GNSS) is a system developed by various countries for military or civilian purposes that uses satellites to provide position and time. Since satellite navigation plays an indispensable role in national security and economic and social development, so All major countries in the world are competing to develop independent satellite navigation systems. [0003] Because of the low power and wide coverage of GNSS signals, satellites can only transmit each signal with ten watts of energy over a range of...

AI Technical Summary

Problems solved by technology

Under the condition that the volume, weight and power consumption of the system modules on the navigation satellite are limited, the photon-assisted satellite spectrum sensing method is used to process the microwave signal in the optical domain, including filtering or down-conversion, breaking through the traditional electrical domain sensing The device limits the loss of the frequency band near the navigation system, and solves the problem of ultra-wideband multi-signal perception processing in the satellite navigation system

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