Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/NikoukartagT2090tp.ps Дата изменения: Tue May 10 19:44:20 2005 Дата индексирования: Sat Dec 22 23:14:22 2007 Кодировка: Поисковые слова: закон вина

Proposal Identification No.: T2090 Date Received: 2005­Feb­04 16:23:06
Technical Page
Proposal Type: Regular
General Category: Terrestrial Aeronomy
Sub­Category: Radar
Observation Category: Ionosphere
Total Time Requested: 60.00 Hours
Proposal Title: A new approach to the optimal extraction of ionospheric parameters from inco­
herent scatter radar measurements
ABSTRACT:
With the objective of improved accuracy in the estimation of the ionospheric parameters such as electron density,
electron temperature, ion temperature and composition, we propose to conduct new F­region experiments in
Arecibo, where amplitude or phase modulated pulses will be utilized as the transmitted pulses. Parameter
extraction problem, then, will be addressed as a new inverse technique which involves the deconvolution of the
ionospheric lag profiles prior to nonlinear least­squares fitting, which allows the range smearing to be completely
removed (using regularization techniques). Several observations were made in 2004, where two heuristically selected
amplitude modulated pulses were transmitted. Although the results were improved over those of a long pulse, the
optimal pulse coding schemes remains open with potential for further improvements. This proposal requests the
telescope time to run new F­region experiments, where optimally designed coded pulses are used in transmission.
This project is part of a PhD thesis and involves Professors Farzad Kamalabadi and Erhan Kudeki of University of
Illinois.
Name Institution E­mail Phone Student
Romina Nikoukar University pf Illinois nikoukar@uiuc.edu (217) 377 9760 G
Service Observing Request Remot e Observing Request
X None X No
All of the observing run. Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
430 G 430 CH receiver 430 CH radar
Atmospheric Observation Instruments:
Ionosonde
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Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
429­431
This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST.
This proposal requires coordination with Punta Salinas radar within the band 1222­1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
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