Time Discriminator for Satellite Radar Altimeter Tracker System
https://doi.org/10.32603/1993-8985-2018-21-1-5-12
Abstract
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.
About the Authors
D. S. Borovitsky
JSC "Russian Institute of Radionavigation and Time".
Russian Federation
Russian Federation
Dmitry S. Borovitsky – Ph.D. in Engineering (2016), leading research fellow.
The author of 20 scientific publications.
Area of expertise: broadband radiolocation and radionavigation systems; signal theory.
120, Obukhovskoy Oborony Pr., bld EC, 192012, St. Petersburg.
A. E. Zhesterev
JSC "Russian Institute of Radionavigation and Time" .
Russian Federation
Russian Federation
Alexander E. Zhesterev – Ph.D. in Engineering (1982), Chief of the Department.
The author of 30 scientific publications.
Area of expertise: radiolocation and radionavigation systems; communication theory.
120, Obukhovskoy Oborony Pr., bld EC, 192012, St. Petersburg.
V. P. Ipatov
Saint Petersburg Electrotechnical University "LETI".
Russian Federation
Russian Federation
Valery P. Ipatov – D.Sc. in Engineering (1983), Professor (1985) of the Department of Radio Engineering Systems. Honored scientist of the RF (2001), honorable radioman of the USSR (1983).
The author of more than 300 scientific publications.
Area of expertise: radio-electronic system engineering; statistical communication theory; broadband radar, navigation and data systems; signal theory.
5, Professor Popov Str., 197376, St. Petersburg.
R. M. Mamchur
Saint Petersburg Electrotechnical University "LETI".
Russian Federation
Russian Federation
Ruslan M. Mamchur – Master of Science in Radio Engineering (2015), post-graduate student and assistant of the Department of Radio Engineering Systems.
The author of 10 scientific publications.
Area of expertise: statistical communication theory; broadband radar, navigation and data systems; signal theory; technical electrodynamics.
5, Professor Popov Str., 197376, St. Petersburg.
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Review
For citations:
Borovitsky D.S., Zhesterev A.E., Ipatov V.P., Mamchur R.M. Time Discriminator for Satellite Radar Altimeter Tracker System. Journal of the Russian Universities. Radioelectronics. 2018;(1):5-12. (In Russ.) https://doi.org/10.32603/1993-8985-2018-21-1-5-12
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