IAPRS & SIS, Vol.34, Part 7, "Resource and Environmental Monitoring", Hyderabad, India,2002
South 165. 52 217 -3.0 220
Africa 85
NIGHT TIME
Greenland | 163. 20.3 184.1 -5.0 189
8
Australia | 189. -17 172 64 236
3
South 152 35 187 -12 175
Africa
India 225 -46 169 57 226
Table-15 b Brightness Temperature Comparison of Grided
Data
EAT 5.0 CONCLUSION
| 4*4 deg ;
The Summary Of DQE Parameters For MSMR Performance is
as follows.
: Parameter Mean Std
Dev
Data reception Quality
e Bad sync scan (number) 30.63 537
e — Bad Cal Scan (number) 9.36 6.98
; Mean Scan rate (count) 5375.93 0.033
5 Standard Deviation of Scan rate 22.21 7.33
: BTD Flagged data(%) 0.05 0.02
: Reference Load Temperature (? 19.2-24.5 0.01
C)
Variation in difference of Hot 10-20 2.12
| count (Max-Min)
| Variation in difference of Hot 60-150 40
Count (Max-Min) for all channels
except 18V. Variation in
difference of Hot Count (Max- 30-250 70
od Min) for 18V.
à Dynamic Range
1. ATD (Deg Kelvin) 70-278
2. BTD (Deg Kelvin) 70-302
3 GPD
= Sea Surface Temperature (° 273-305
K) 0-30
= Sea Surface Wind Speed
| (Mtr/Sec) 0.1-9.0
ONG = Water vapor (Grm/cm?) 0.0-2.0
| = Liquid Water (Kg/Mtr))
48
84 Homogeneity (Deg Kelvin)
0 " Ocean 158-230 10-
| = Desert 270-290 6.0
9 0.15-
5 3.0
1 Geolocation
25 = Threshold Temperature (° K)
| Ocean 170 10
Coastal 200 8
Land 220 5
| CRID = Grid Resolution
)) Grid-1(150Km) «1.0 0.5
Grid-2(75Km) 21.0 & 0.5
Grid-3(50Km) <2.0 0.5
183.26 512 &
«3.0
Table 16 Summary Of DQE Parameters
MSMR DQE Software System is GUI Based menu driven
Package. The Summary results for each parameter of given day
is stored in ORACLE Database. Summary Reports for different
products are generated using structured query language based
retrieval software. Pre-defined queries are used to generate
these reports. MSMR sensor performance specifications have
been derived from regular analysis of data for two years.
Sensor engineering Performance Parameters from SDF Data is
showing excellent behavior. Radiometric performance of ATD
and BTD shows coverage of 60% for Dynamic Range from
natural objects. Geolocation of Product is within +/- 1.2 grid
resolution. On Average the sensitivity of 1°K is observed for all
Channels.
REFERENCES
ENIG N JOKU, J M STACEY, FRANK T BARATH, April
1980. The seasat Scanning Multichannel Microwave
Radiometer (SMMR), instrument Description and Performance.
IEEE Journal of Oceanic Engineering, Vol. OE-5, No.2
Marie C Colton, Gene A Poe, January 1999, Intersensor
Calibration of DMSP SSM/T’s: F-8 to F-14, 1987-1997. IEEE
TRANSACTIONS ON GEOSCIENCE AND REMOTE
SENSING, Vol 37 Nol, January 1999.
EniG Njoku, Li Li January 1999 Retrieval of Land Surface
Parameters Using Passive Microwave Measurements at 6-18
GHz. IEEE TRANSACTION ON GEOSCIENCE AND
REMOTE SENSING Vol 37 Nol January 1999.
TECHNICAL REPORTS Prepared by Project Team of IRS-P4
Mission System, MSMR Payload System, Data Product
System, Data Quality Evaluation System.
ACKNOWLEDGEMENT
The authors wish to Thank Dr. A.K.S. Gopalan Director SAC,
Mr. R.N. Tyagi Project Director, IRS-P4, Dr. K. L. Majumdar
GD, SIIPA/SAC and Dr. S. B. Sharma GD, AFG/MISA for
their encouragement and guidance in the capacity of Associate
Project Director of IRS-P4 Mission. We acknowledge Mr.
Santanu Chowdhury DPD, Data Product, Mr. Tapan Misra
DPD, MSMR Payload for Technical Discussion and to clarify
system functioning and sharing calibration data. We are
grateful to Mr. AS Manjunath GD, (SP & QE) and his
NRSA/DQE Team and SAC DQE Team for making Data
available for analysis. :
