Time Discriminator for Satellite Radar Altimeter Tracker System

Известия высших учебных заведений России: Радиоэлектроника

A. E. Zhesterev¹  D. S. Borovitsky²  V. P. Ipatov³  R. M. Mamchur³ 

[1] JSC "Russian Institute of Radionavigation and Time" .;JSC "Russian Institute of Radionavigation and Time".;Saint Petersburg Electrotechnical University "LETI".;

关键词: satellite altimeter;    time discriminator;    delay-lock loop;    discriminator curve;   

DOI  :  10.32603/1993-8985-2018-21-1-5-12

来源: DOAJ

【 摘 要 】

The article considers the design of optimum time discriminator for onboard delay-lock loop of a spacebased radar altimeter. The basic signal model is simplified remaining however adequate enough to the task of keeping echo-signal within the tracking receiver window. Along with the optimal one the quasi-optimal maximum-point and maximal-steepness-point discriminators are proposed. The discriminator curves of all considered structures are calculated. It is shown that the quasi-optimal discrimination yield about 2.5 times to the optimal one in the equivalent time fluctuations. Such a loss can be considered a tolerable cost of achieved hardware simplicity.

【 授权许可】

Unknown