The Monocular Electro-Optical Stereo Scanner (MEOSS)
Satellite Experiment
F..Lanzl,
DFVLR, German Aerospace Establishment
Institute for Optoelectronics
D-8031 Oberpfaffenhofen, FRG
1. Introduction
In 1980 the Indian Space Research Organization ISRO offered
to DFVLR to fly an experiment of 10-20 kg on a Streched
ROHINI Satellite (SROSS) of the 150 kg class. !
The common understanding is to fly under the constraints
of the SROSS mission (Table 1) an attractive low cost experi-
ment provided by DFVLR.
Table:1: Nominal specifications for SROSS-MEOSS Mission
Mission Parameters
circular orbit 450 km
inclination 45,569? (48.20?)
orbital period 92.8 minutes
lifetime 6-12 months
launch mid 1987
telemetry S-band
data rate 10.4 Mbit
payload weight 10 kg
payload power 25 Watt for 20 minutes/day
2. The Instrument
The main characteristics of the proposed threefold stereoscopic
CCD line scan camera are:
- a single objective (monocular) imaging system for
reduction of weight and adjustment efforts
= no moving mechanism
- ‘passive cooling
— three relatively long CCD lines of 3456 pixels in one
common focal plane
- One spectral band between 570 to 700 nm
- 8 bit radiometric resolution
- LANDSAT MSS compatible geometrical resolution
- correction for earth rotation by electronic shift.
The optomechanical design with a central, mechanically indepen-
dent imaging unit consists of a Space modification of a Zeiss
Biogon objective and the focal plane containing three parallel
CCD lines vertical to flight direction as shown in Fig...
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