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Title: RPA aeronomy experiment onboard the Indian satellite SROSS-C2— Some important aspects of the payload and satellite
Authors: Garg, S C
Anand, J R
Bahl, M
Subrahmanyam, P
Rajput, S S
Maini, H K
Chopra, P
John, T
Singhal, S K
Singh, Vishram
Singh, Dhan
Das, U N
Bedekar, S M
Soma, P
Goel, D P
Issue Date: Feb-2003
Publisher: NISCAIR-CSIR, India
Abstract: An aeronomy payload of retarding potential analyser (RPA) consisting of an electron RPA, ion RPA and a potential probe (PP), designed and developed at the National Physical Laboratory, New Delhi, was flown onboard the Indian satellite SROSS-C2 on 4 May 1994, for making in situ measurements of F-region ionospheric plasma. The objective of the mission was to investigate the characteristics and energetics of the equatorial and low latitude ionosphere / thermosphere over the Indian region. The SROSS-C2 was a spin -stabilized orbiting satellite placed in an elliptical orbit having orbit inclination of 46.3°. The payload made simultaneous sampling of electron and ion plasma in the altitude range of 420-620 km for more than half a solar cycle from minima to maxima of the 23rd solar cycle activity. During initial phase of the mission, measurements were made in a higher orbit for a limited period of two months, while the satellite apogee was at 930 km keeping the perigee same. The total ion density, electron and ion temperatures, ion composition, supra-thermal electron flux and irregularities in electron and ion densities along the satellite orbit can be derived from the measurements. In this paper, some important aspects of the scientific pay loads, the satellite and its orbital configuration, which are important in understanding the pay load operation in space for data collection including the analysis of data and their interpretations are described.
Page(s): 5-15
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.32(1) [February 2003]

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