Low-orbit constellation phased array communication navigation fusion application terminal

Abstract

The invention provides a low-orbit constellation phased array communication and navigation fusion application terminal, which integrates an antenna, an amplifier, a radio frequency channel, baseband processing and a power supply, integrates measured terminal three-dimensional acceleration and three-dimensional angular velocity information by receiving and processing GNSS navigation signals, solves terminal position and attitude information in real time, and realizes communication and navigation. The low-earth-orbit satellite two-way communication method comprises the steps of receiving a plurality of low-earth-orbit satellites, providing pitch angle and azimuth angle information of the communication satellites for digital phased array processing, receiving communication information of the low-earth-orbit satellites by adopting a digital phased array beam forming technology, sending the communication information to the low-earth-orbit satellites by adopting a digital phased array weighted modulation technology, and completing a low-earth-orbit satellite two-way communication function. According to the invention, the integrated design of each module is realized in a relatively small volume, attitude measurement based on satellite navigation and inertia combination is completed, an accurate reference is provided for beam pointing, receiving and transmitting digital beam processing of low-orbit communication radio frequency signals is completed, and the function of supporting communication access of two low-orbit satellites at the same time is realized.

Description

technical field [0001] The invention relates to the technical field of electricity, in particular to a low-orbit constellation phased array communication and navigation fusion application terminal. Background technique [0002] Low-orbit satellites are often used as communication satellites because they are close to the ground, have excellent signal quality, and have a smaller time delay. The low-orbit satellite constellation can provide information enhancement and signal enhancement to the navigation constellation on a global scale, provide users with real-time high-precision positioning services, and improve the efficiency of communication and remote sensing services. LEO constellations have gradually attracted the attention and favor of academia and industry due to their unique advantages of both communication and navigation functions. [0003] The US Iridium system and the GPS system jointly developed a new type of satellite timing and positioning service (STL), which h...

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the application problem of orbital constellation communication and navigation fusion, and provides a low-orbit constellation phased array communication and navigation fusion application terminal, which integrates antennas, amplifiers, radio frequency channels, baseband processing, and power supplies. By receiving and processing GNSS navigation signals, fusion Measured terminal three-dimensional acceleration and three-dimensional angular velocity information, real-time calculation of terminal position and attitude information, and provide communication satellite pitch angle and azimuth information for digital phased array processing, using digital phased array beamforming technology to receive multiple low-orbit satellites Satellite communication information, using digital phased array weighted modulation technology to send communication information to low-orbit satellites, completing the two-way communication function of low-orbit satellites

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