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机载海洋雷达高度计中的采样保持及误差分析
Alternative TitleNew M ethod of Tuning Parameters in FCUsing Cross Covariance Functions
李茂堂; 周宁; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication仪器仪表学报
1997
Volume18Issue:3Pages:306-309
ISSN0254-3087
Language中文
Keyword机载雷达 海洋 高度计 采样保持 误差分析
Abstract机载海洋雷拯高度计是中分辨力试验用镦波遥感器,它采用的方法是全去斜坡和分裂门 技术“.海面回波信号经过全去斜坡之后的中凝36MHz信号加到斜坡滤波器组(12个斜坡滤 波器及早门和晚门滤波器)上,这些滤波器组可以提供回波功率的模拟值,经采样保持和A/D 变换,送计算机进行处理,从而可预测出飞机平台至平均海平面之间的高度,以及其海面波浪 浪高和海面后向散射系数的估计值 . 原设计采用瞬时采样保持电路,即它是取瞬时值作为采样信号.但是由于接收机中的时延 及电路参数不一致等因素,使斜坡滤波器间输出的信号存在时间差(最大为88ns)导致瞬时采 样保持电路的保持值也存在一个时间差.这对高度和海面波高等参数的估计产生了不应有的 误差. 为此,我们首次研制了峰值采样保持电路.该电路能够保持回波功率模拟量的最大值而不 受斜坡滤波器之间输出信号时间差的限制,并且具有平滑滤波,抑制干扰的作用.
Other AbstractThe paper discusses the optimal adjustment of the parameters,which are very important to FC system characteristics in FG research areas. So the optimal tuning of the SP is a hot topic in the design and application of the FG.The method bases on the as-sumption that in the stationary case an optimally adjusted scaling factor meets a specific sta-tistical input/output dependency.Qn the base of giving the statistical relationship of the in-put and output in FC,the paper analyses and describes the new tuning method of SF, which Gases on the FG statistical input and output dependedncy.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1921
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
李茂堂,周宁,北京8701信箱. 机载海洋雷达高度计中的采样保持及误差分析[J]. 仪器仪表学报,1997,18(3):306-309.
APA 李茂堂,周宁,&北京8701信箱.(1997).机载海洋雷达高度计中的采样保持及误差分析.仪器仪表学报,18(3),306-309.
MLA 李茂堂,et al."机载海洋雷达高度计中的采样保持及误差分析".仪器仪表学报 18.3(1997):306-309.
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