Zobrazeno 1 - 10
of 26
pro vyhledávání: '"A. E. Zhesterev"'
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 22, Iss 2, Pp 13-21 (2019)
Introduction. Satellite radar altimeter is an essential part of the Earth remote sensing space missions. Satellite altimeter on-board delay-lock loop, by a widely shared concept, is operationally just a tool of a reliable retaining of received echo-s
Externí odkaz:
https://doaj.org/article/5498cbf862994bbd9e7319867eafb5cb
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 1, Pp 5-16 (2019)
Satellite radar altimeters play a key role in numerous space missions for the remote Earth sensing. The data they provide are used in solving various fundamental and applied problems of geophysics, oceanography, meteorology, etc. In many modern measu
Externí odkaz:
https://doaj.org/article/b5bf83dd04be43a9a433dad4ba669a20
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 4, Pp 13-23 (2018)
This paper provides a study of robust TOA discriminators used in ground-based retracking of a space-based altimeter da-ta. Requirements to an on-board TOA tracking loop are limited to reliable locking of received echo-signal within the tracking windo
Externí odkaz:
https://doaj.org/article/78a9ce2b36f44f2aa94ed59f410b2250
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 3, Pp 5-14 (2018)
Satellite altimeters play a key role in Earth remote sensing programs. To attain a centimeter accuracy level within the limited energy budget the altimeter probing signal should have a processing gain of the order of tens of thousands. Un-der such ci
Externí odkaz:
https://doaj.org/article/7de185fd014d4adc87802d452e45a4b5
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 2, Pp 5-11 (2018)
The article deals with the study of quasi-optimal TOA discriminator of an onboard echo-signal tracker of the altimeter carried by a space vehicle. In modern space-based altimeters, final data processing is imposed on the ground-based center receiving
Externí odkaz:
https://doaj.org/article/dd6e233d3bac4681ad8596baf016f357
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 5, Pp 12-19 (2017)
The subject of investigation is a space-based altimeter. The goal of investigation is development of MATLAB software model of echo-signal in a satellite radar altimeter. The phenomenological treatment of a scattering surface is used as a set of indep
Externí odkaz:
https://doaj.org/article/5e8d3daa0c1f45cc897b59a7a8911394
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 4, Pp 33-41 (2017)
The subject of research is a space-based radar altimeter. Modern satellite altimeters along with the instant distance to an earth surface are to measure the sea wave height and scattering cross section per unit of a probed spot. Ranking of specific m
Externí odkaz:
https://doaj.org/article/c0e156293ff449618cc26018f899c35d
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 4, Pp 27-32 (2017)
The paper is aimed at the study of time-based searching procedure for satellite altimeter echo-signal. The specific character of the problem is the noise nature of received signal which is a superposition of multiple illuminated scatters reflection.
Externí odkaz:
https://doaj.org/article/bf1d531359d84f02bb732c4edae5c916
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 3, Pp 46-51 (2017)
In the analytical approximation of time dependent average power of a satellite altimeter echo-signal (power profile) the Doppler scattering of individual specular point responses is usually neglected. Meanwhile, in the modern Ka-band altimeters the D
Externí odkaz:
https://doaj.org/article/69a3b7d80ef349ac9821bde148b75a5a
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 3, Pp 39-45 (2017)
To design and analyze signal processing procedures in the onboard receiver of a space-based altimeter an analytical echo-signal model is desirable which combines compactness with acceptable accuracy of presenting average return power dependency on th
Externí odkaz:
https://doaj.org/article/ccc1c944c1ca41d982cca879b3e74ef7