On-board Antenna Tracking System for HTS Satellites: ISRO’s First In-Orbit Success on GSAT-19

2022 Second International Conference on Advances in Electrical, Computing, Communication and Sustainable Technologies (ICAECT) Pub Date : 2022-04-21 DOI:10.1109/ICAECT54875.2022.9807898

P. Gupta, Santosh Lacheta, N. Desai

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引用次数: 1

Abstract

This paper presents ISRO’s and India’s first successful development and validation of a space borne Antenna Tracking System technology on its experimental HTS satellite GSAT-19. Onboard tracking system demonstration is an enabling technology for a High Throughput Satellite (HTS) program as it is essential to maintain beam coverage of high-gain sharp multiple beam antennas locked to specific coverage zones on the ground to ensure edge-of-coverage gains and variations in spite of spacecraft roll & pitch stability residues. The tracking system senses such fine angular offsets and generates proportional DC error voltages that are used to apply the required correction to the antenna axes through appropriate drive motors. The system has been designed & tested for the tracking accuracy better than 0.01°. The technology has been successfully developed and proven for the first time on an ISRO satellite, paving the way for full-fledged follow-on HTS satellites (GSAT-11, GSAT-20 etc).

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用于高温超导卫星的机载天线跟踪系统:ISRO在GSAT-19上首次在轨成功

本文介绍了ISRO和印度在其实验高通量超导卫星GSAT-19上首次成功开发和验证空间载天线跟踪系统技术。机载跟踪系统演示是高通量卫星(HTS)计划的一项使能技术，因为它必须保持锁定在地面特定覆盖区域的高增益尖锐多波束天线的波束覆盖，以确保覆盖边缘增益和变化，尽管航天器滚转和俯仰稳定性残留。跟踪系统感知这种细微的角度偏移，并产生成比例的直流误差电压，用于通过适当的驱动电机对天线轴施加所需的校正。系统经过设计和测试，跟踪精度优于0.01°。该技术已成功开发，并首次在ISRO卫星上得到验证，为后续成熟的HTS卫星(GSAT-11、GSAT-20等)铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 Second International Conference on Advances in Electrical, Computing, Communication and Sustainable Technologies (ICAECT)

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