using MSR data corresponds with the region obtained by using rain
radar.
c)sea ice
Example of sea ice was observed through cloud in MSR data
obtained in path 21, April.10, 1987. Since sea " brightness
temperature of sea ice is very high, sea ice distribution can be
obtained under all weather condition. MSR data is routinly used
to forecast drift sea ice in northern ocean of Hokkaido.
3.4 DCS
The DCST transponds data from buoys to Earth Observation
Center, where the position of the buoys are determined utilizing
doppler frequency measurement. Bit error rate, position
estimation error and DCS success rate are 7.3 x10 , 500m and 90
^. Transmitting frequency of DCP was changed from 401.53MHz to
401.47 MHz to prevent from outer radio interference.
4, Conclusion
As a result of initial evaluation of MOS-1 data, MOS-1
observation system was found to show satisfactory condition.
NASDA continue evaluation in collaboration with domestic and
foreign investigators.
Acknowledgement
The authors would like to thank investigators who
participated in the MVP and related staff in NASDA.
References
1.Announcement of Opportunity for MOS-1 Verification Program
National Space Development Agency of Japan (NASDA)
2.K.Maeda et al.,"Airborne observation experiments for MOS-1
Verification Program (MVP),"Proceeding of the fifteenth
International Symposium on Space Technology and Science
(ISTS),pp.1659-1670,Tokyo, 1986.
3.K.Maeda et al.,"Geometric and radiometric performance
evaluation methods for Marine Observation Satellite-1(MOS-1)
Verification Program(MVP),"Acta Astronautica vol.15,No.6/7,pp.
297-304,1987.
4.K.Maeda et al.,"Some results of MOS-1 airborne verification
experiment-Multispectral Electronic Self-Scanning Radiometer (ME
SSR)," IEEE Transactions on Geoscience and Remote Sensing,vol.
25,No.6,pp.788-795,Nov., 1987.
5.K.Maeda,H.Wakabayashi and H.Sato,"Some results of MOS-1
airborne verification experiment-MSR(Microwave Scanning
Radiometer).
104