三、印度遥感卫星IRS—1A 1.发射情况及星体有关参数印度遥感卫星IRS—1A,经印度空间研究院(ISRO)近十多年的努力,在若干实验性卫星(ARYABHATA,BHASKARA—Ⅰ、Ⅱ,ROHINI系列,APPLE)试验的基础上,在比预定计划(1986年初)推迟一年之后,于1987年3月17日应用苏联火箭VOSTAK在苏联哈萨克斯坦的拜加努尔人造卫星发射场发射上天。卫星重975公斤(含80公斤用于卫星轨道修正的燃料肼),在卫星进入设计轨道之后,太阳帆板张开;在第一天内即进行了太阳能接收、卫星三轴稳定和S波段控制数据传输的测试。在次日(1987年3月18日)IRS—1A运 III. INDIRECT REMOTE SENSING IRS-1A 1. Emission and Astral Parameters Indian Remote Sensing Satellite IRS-1A, under the efforts of the Indian Institute of Space Studies (ISRO) for nearly a decade, conducted experiments on a number of experimental satellites (ARYABHATA, BHASKARA-I, II, ROHINI series, APPLE) test, launched a Soviet rocket VOSTAK at the Baikanyur satellite launch site of the Soviet Union in Kazakhstan on March 17, 1987, after a delay of one year from the planned date (early 1986) God. The satellite weighs 975 kilograms (including 80 kilograms of hydrazine for satellite orbital correction) and opens after the satellite enters the design orbit; during the first day solar reception, satellite tri-axial stabilization and S-band control Data transmission test. The next day (March 18, 1987) IRS-1A shipped