Design And Implementation Of The Satcom On The Move Two-Dimensional Active Phased Array Antenna

In recent years,with the development of satellite communication technology,as an important part of wireless communication,it has the characteristics of large coverage,long communication distance and little influence by natural environmental factors.Based on the above characteristics,satellite communications are increasingly favored by people in military applications,disaster relief,maritime communications,and wilderness areas.The mobile communication technology is to install a satellite communication earth station on a movable carrier,and apply unique stability and tracking technology to make the antenna always align with the specified geosynchronous orbit satellite during the carrier movement,and maintain the carrier and the satellite.Conventional moving antennas generally use three-dimensional mechanical servo-driven reflective antennas,which are large in size,high in height,poor in aging resistance and wear resistance,and more and more difficult to meet the needs of users for Satcom on the move.In the two-dimensional phased array,the antenna has small volume,low profile,common type,fast beam switching speed,and long life of pure solid structure.It can meet the needs of users in a variety of harsh conditions.This thesis is aimed at the above problems.The two-dimensional active phased array antenna beam steering technology and stable and reliable satellite antenna tracking technology are the main research objects.In-depth analysis of beam space synthesis technology,automated test technology,and satellite precise alignment After technology,strapdown inertial navigation technology,high-precision beacon technology and other technologies,the above technologies are organically integrated,and a two-dimensional active phased array mid-pass antenna control system is designed and implemented.The main content is:1.Design a two-dimensional active phased array dynamic mid-antenna antenna control system architecture.It is required to combine the design of the antenna and the TR component to meet the requirements of the technical specifications of the project.Firstly,the beam space synthesis and scanning(hereinafter referred to as wave control)function of the two-dimensional active phased array antenna is realized,and the antenna is followed by the carrier.The ability to control beam alignment to a given communication satellite in real time during motion.2.Design control system main control board schematic diagram,including core processing device and its attached chip,data storage part,external interface part,chip power supply part,etc.3.Design a high-performance two-dimensional active phased array antenna beam steering algorithm.Meet the technical specifications of the wave control part sub-module,and achieve the purpose of fast and accurate switching of the phased array antenna beam.4.Designing a high-performance satellite precise alignment algorithm combined with a wave control algorithm to finally realize the function of the antenna beam to align with the designated communication satellite in real time during the motion.