TM 2 MOMS SOO TM 4 MOMS 900 
Fig. 9: Testsite Atacama desert, Chile. The histo 
grams show a comparable dynamic range due 
to MOMS being switched to gain 2. 
TM 6 bit MOMS 7 bit 
Fig. 10: Operating in gain level 2, MOMS uses its 
7 bit feature space nearly complete in 
contrast to TM with its 8 bit feature 
space. 
nm, 630 + 20 nm, 900 + 75 nm) with 12 m ground 
pixel size, 900 nm band with 100 km swath width, 
560 und 630 nm bands half of it; 
- two panchromatic bands with 12 m ground resolution 
each at 50 km swath width, spectral range 600 - 
800 nm; the stereo convergence angle on account of 
technical frame conditions is limited to 20 
degrees; taking into consideration the instrument's 
spatial resolution, a height resolution of 40 m 
can be achieved. 
When comparing the M0MS-02 to MOMS-01, the following 
important improvements have to be pointed out: 
- three multispectral bands for a straight forward 
false color image generation and the possibility 
for an automatic classification; 
- 12 m ground pixel size versus 20 m; 
- stereoscopic in-track data acquisition. 
With respect to the goal to develop and construct a 
flexible advanced MOMS instrument featuring 
combined stereoscopic and multispectral capabili 
ties for an operational application in the mid 
nineties, which will match the future user 
requirements in spaceborne remote sensing, the 
scientific objectives of M0MS-02 flown in 
connection with the D-2 mission can be summarized 
as follows: 
Under technical aspects: 
- use and testing of newest CCD - array technology, 
featuring smaller pixels and longer scan lines; 
- grouping of two spectral bands in the focal 
plane of one optic by using spectral filter 
plates mounted directly on the arrays; 
- development of onboard data compression methods 
(2 to 1) enabling the data to be transmitted 
without a significant loss of their informa 
tion content via the existing telemetry links; 
- data acquisition in higher latitudes (Europe) 
with their specific albedo and surface pattern 
conditions. 
Under application oriented aspects: 
With regard to the application oriented part of 
the missions the scientific objectives aim at the 
combination of geometric, i.e. topographic infor 
mation with multispectral data for thematic, 
photogrammetric and cartographic purposes. 
REFERENCES 
1. Bodechtel, J. et al.: M0MS-01 Missions and 
Results, American Institute of Aeronau 
tics and Astronautics Progress Series, 
volume 97, pp. 524 - 535, New York, 1935. 
2. Kaufmann, H., J. Bodechtel, R. Haydn: Spectral 
Significance of MOMS versus Landsat Data 
and Future Aspects, Preliminary Results, 
IGARSS Symposium, Strasbourg, France, vol. 
1, pp. 39 - 44, ESA Sp-215, 1984. 
3. Henkel, J., K. Bothmann, G. Sussenguth: 
Radiometric Correction of MOMS-CCD Images, 
proc. EARSeL/ESA Symposium "European 
Remote Sensing Opportunities", Strasbourg, 
France 1985, ESA SP-233. 
4. Henkel, J., H. Kaufmann: Calibration of MOMS- 
CCD Data and Qualitative Test Using TM 
Data, proc. 3 rd International Coll, on 
Spectral Signatures of Objects in Remote 
Sensing, Les Arcs, France, Dec. 1985, ESA 
SP-247. 
5. Salomonson, V.V., W. Hallada, J. Bodechtel: 
Preliminary Quantitative Comparisons in 
the Performance of the Tandsat Thematic 
Mapper and the Modular Optoelectronic 
Multispectral Scanner (MOMS) pres. 
American Society of Photograrnmetry Meeting, 
Indianapolis, Indiana, U.S.A., Sept. 1985.