Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/NikoukartagT2090tp.pdf Дата изменения: Tue May 10 19:47:58 2005 Дата индексирования: Sat Dec 22 23:31:42 2007 Кодировка: Поисковые слова: universe

Proposal Identification No.:

T2090

Date Received:

2005-Feb-04 16:23:06

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT:
With the ob jective of improved accuracy in the estimation of the ionospheric parameters such as electron density, electron temp erature, ion temp erature and comp osition, we prop ose to conduct new F-region exp eriments in Arecib o, where amplitude or phase mo dulated pulses will b e utilized as the transmitted pulses. Parameter extraction problem, then, will b e addressed as a new inverse technique which involves the deconvolution of the ionospheric lag profiles prior to nonlinear least-squares fitting, which allows the range smearing to b e completely removed (using regularization techniques). Several observations were made in 2004, where two heuristically selected amplitude mo dulated pulses were transmitted. Although the results were improved over those of a long pulse, the optimal pulse co ding schemes remains op en with p otential for further improvements. This prop osal requests the telescop e time to run new F-region exp eriments, where optimally designed co ded pulses are used in transmission. This pro ject is part of a PhD thesis and involves Professors Farzad Kamalabadi and Erhan Kudeki of University of Illinois.

Regular Terrestrial Aeronomy Radar Ionosphere 60.00 Hours

A new approach to the optimal extraction of ionospheric parameters from incoherent scatter radar measurements

Name Romina Nikoukar

Institution University pf Illinois

E-mail nikoukar@uiuc.edu

Phone (217) 377 9760

Student G

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing

X

No Maybe Yes

Instrument Setup
430 G 430 CH receiver 430 CH radar

Atmospheric Observation Instruments: Ionosonde 1


Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned
429-431 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 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

2