CAJ | 학술논문

HJ-1-C 是我国环境与灾害监测小卫星“2+1”星座中的一颗合成孔径雷达(SAR)卫星，工作于 S 波段，具有5 m分辨率。SAR载荷采用网状反射面天线和大功率放大器方案，具有重量轻、效率高的特点，适合于小卫星平台。目前HJ-1-C卫星已在轨运行，获得我国首批S波段星载SAR图像，图像质量高，地物信息丰富，表明SAR 载荷的设计合理，试验和测试充分。HJ-1-C 卫星将为我国减灾和环境应用发展做出贡献。该文将对 HJ-1-C卫星SAR载荷的设计和研制进行全面介绍，包括其主要功能和技术指标，各部分的设计，以及研制、测试和试验工程，最后给出其在轨获得的图像。
HJ-1-C 시아국배경여재해감측소위성“2+1”성좌중적일과합성공경뢰체(SAR)위성，공작우 S 파단，구유5 m분변솔。SAR재하채용망상반사면천선화대공솔방대기방안，구유중량경、효솔고적특점，괄합우소위성평태。목전HJ-1-C위성이재궤운행，획득아국수비S파단성재SAR도상，도상질량고，지물신식봉부，표명SAR 재하적설계합리，시험화측시충분。HJ-1-C 위성장위아국감재화배경응용발전주출공헌。해문장대 HJ-1-C위성SAR재하적설계화연제진행전면개소，포괄기주요공능화기술지표，각부분적설계，이급연제、측시화시험공정，최후급출기재궤획득적도상。
HJ-1-C is a Synthetic Aperture Radar (SAR) satellite in the Constellation of “2+1” for China environment and disaster monitoring. It works at S-band with a resolution of 5 m. SAR payload uses a reflector antenna and a high-power concentrated transmitter. Its light weight and high efficiency is very suitable for a small satellite platform. Now HJ-1-C satellite has been launched into orbit and has acquired Chinese first S-band SAR images from space, which demonstrate excellent quality and rich information about scenes imaged. This success verifies our design, testing and experiment work on the payload. With its following operation, HJ-1-C satellite is expected to make a great contribution to the applications of environment protection and disaster monitoring in China. This paper introduces the design and development of HJ-1-C SAR payload, present its main parameters and performance, describes its device details and its manufacture, testing and experiment process. Some images acquired in the orbit are showed.