星载毫米波辐射计地面定标实验

	星载毫米波辐射计地面定标实验
	张东 ; 郭伟
刊名	遥感技术与应用
	2005
卷号	20 期号:4 页码:439-442
关键词	嫦娥一号微波辐射计定标
ISSN号	1004-0323
其他题名	Ground Cal ibration Exper imen t of SpaceborneM ill imeterWave Radiometer
通讯作者	北京8701信箱
中文摘要	对CE-1(嫦娥一号)卫星有效裁荷微波探测仪初样样机8mm微波辐射计进行了地面定标实验.测量了接收机的线性度和灵敏度;建立了射频前端微波辐射传输模型;应用该模型并结合测试结果,建立了失配条件下辐射计天线温度的定标方程.实验结果表明,接收机线性度为0.9999,灵敏度为0.17K,定标误差小于0.85K.为CE-1正样样机的研制以及科学目标的实现提供了定标参考.
英文摘要	ChangE21 (CE21) will be the first satellite of Ch ina in lunar o rb it. It s radiometer operates at 3.0,7.8,19.35 and 37 GHz in a nadir view ing mode. By now ,the prelaunch experimen tal CE21M icrow ave Radiometer is developed. In th is paper, an experimen t on the ground calib rat ion of 37GHz channel is carried out.First, the linearity and sen sit ivity of it sreceiver is obtained to be 0.9999 and 0.17 K, respect ively, and satisfy the perfo rmance requ irements,so CE21M icrow ave Radiometer can be calib rated th rough high and low temperatu repoints:the h igh temperatu repoint is from the match ing load, the low one is f rom the liqu id n it rogen ref rigerated calib rat ion b lackbody target. Mo reover,to amend the inf luence by the t ran smission netwo rk, the modif ied hardw are radiat ive t ran sfer model is bu ilt up. The an tenna temperatu re calib rat ion equat ion, which accoun t s fo r lo sses and m ismatch, is derived f inally based on the model and the erro r of calib rat ion is less than 0.85K.The resu lt s p rovide a con st ruct ive reference to the fu rther developmen t of CE21M icrow ave Radiometer for launch.
学科主题	微波遥感
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:2011846
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1994]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	张东,郭伟. 星载毫米波辐射计地面定标实验[J]. 遥感技术与应用,2005,20(4):439-442.
APA	张东,&郭伟.(2005).星载毫米波辐射计地面定标实验.遥感技术与应用,20(4),439-442.
MLA	张东,et al."星载毫米波辐射计地面定标实验".遥感技术与应用 20.4(2005):439-442.