radarsat-1: mission performance and plans
DESCRIPTION
RADARSAT-1: Mission Performance and Plans. Surendra Parashar, Ahmed Mahmood, Dan Showalter, Satish Srivastava Canadian Space Agency [email protected]. IGARSS 2007 Barcelona, Spain, July 23-27, 2007. Canada's first operational EO satellite. HH Polarized C-Band SAR - PowerPoint PPT PresentationTRANSCRIPT
RADARSAT-1: Mission Performance and Plans
Surendra Parashar, Ahmed Mahmood, Dan Showalter, Satish Srivastava
Canadian Space [email protected]
IGARSS 2007Barcelona, Spain, July 23-27, 2007
As of 30 April 2007
Total minutes of data: 426,688Total orbits completed: 59,957Total of customer image requests: 274,534
Average System Performance: > 95%
Canada's first operational EO satellite
Sun-synchronous, Dawn–Dusk LEO
Altitude: 798 kmPeriod: 100.7 minutesRepeat Cycle: 24 days
Orbits per day: 14
ForestryCrop MonitoringAntarctic Mapping Missions (1997 & 2000)Background Mission (Global stereo coverage of landmass)
Ice MonitoringPollution MonitoringDisaster Watch – International CharterHurricane Watch
HH Polarized C-Band SARLaunched Nov. 1995 – Operational April 1996
Mission Lifetime: 5.25 years – Since Launch: 11 years
The Ground Infrastructure
6 Order Desks35 Data Reception Facilities
23 Archiving Facilities
Number of requests per Order Desk
CGOD,CIS,MCS/CAS: 112,829NASA/NOAA: 88,588
MDA (GSI): 79,247ESA: 0
RADARSAT-1 Reception CoverageRADARSAT-1 Reception Coverage
20042004
20032003
20022002
20012001
20002000
19991999
19981998
19971997
19961996
19951995 Data Reception Facilities: 35 (including 8 transportable stations)
Data Archiving Facilities: 23
Actually under certification: 0
Data Reception Facilities: 35 (including 8 transportable stations)
Data Archiving Facilities: 23
Actually under certification: 0
2 Transportable Stations (2000)
1 Transportable Stations (2003)
3 Transportable Stations (2004)
20052005
2 Transportable Stations (2005)2 Transportable Stations (2005)
20062006
Russia(2007)
Russia(2007)
Japan(1998)Japan(1998)
Korea(1998)Korea(1998)
China(1998)China(1998)
Thailand(2000)
Thailand(2000)
Singapore(1997)
Singapore(1997)
Malaysia(2003)
Malaysia(2003)
Alice Springs(1998)
Alice Springs(1998)
Hobart(1998)
Hobart(1998)
McMurdo(1995)
McMurdo(1995)
Benevento(2006)
Benevento(2006)
West Freugh(1996)
West Freugh(1996)
Tromso(1996)
Tromso(1996)
Turkey(2002)
Turkey(2002)
Norway(2007)
Norway(2007)
Kazakhstan (2)(2005)
Kazakhstan (2)(2005)
Saudi Arabia(1998)
Saudi Arabia(1998)
Moscow(2004)
Moscow(2004)
Fairbanks
(1995)Fairbanks
(1995)
Miami(2004)Miami(2004)
Gatineau(1995)
Gatineau(1995)
Prince Albert(1995)
Prince Albert(1995)
Brazil(2001)Brazil(2001)
Argentina(2002)
Argentina(2002)
Puerto Rico(2000)
Puerto Rico(2000)
20072007
Operational StatisticsOperational Statistics
Cumulative SAR On-Time (Minutes) as of April 2007
0
50000
100000
150000
200000
250000
300000
350000
400000
450000
500000
550000
Nov-95
Apr-96
Sep-96
Feb-97
Jul-97
Dec-97
May-98
Oct-98
Mar-99
Aug-99
Jan-00
Jun-00
Nov-00
Apr-01
Sep-01
Feb-02
Jul-02
Dec-02
May-03
Oct-03
Mar-04
Aug-04
Jan-05
Jun-05
Nov-05
Apr-06
Sep-06
Total
OBR
Real Time
% SAR On Time (Including Sharing)May 96 - Apr 07
US48%
Cdn Govt32%
RSI20%
Cdn Govt SAR On Time Including Sharing May 96- Apr 07
CIS34%
CAS0.8%
CGOD/ CCRS
6%
MCS59%
Canadian Government Request DistributionApr 97 - Apr 07
MCS70%
CIS17%
CAS5% CGOD/ CCRS
7%
Request Distribution Apr 97 - Apr 07
RSI27%
Cdn Govt 41%
US Govt32%
Operational StatisticsOperational Statistics
Beam Usage Distribution
Standard31%
Fine18%
ScanSAR41%
Wide8%
Extended2%
System Performance is defined as the % of planned requests which were properly executed by the payload and successfully received by the reception facilities
Operational StatisticsOperational Statistics
System Performance: Jul 1996 - Apr 2007
Received95.78%
Reception Loss1.38%
Payload Loss2.84%
RADARSAT-1 Weekly System Performance: July 31/96 to Apr 30/06
0
10
20
30
40
50
60
70
80
90
100
Jul-96 Mar-97 Nov-97 Jul-98 Mar-99 Nov-99 Jul-00 Mar-01 Nov-01 Jul-02 Mar-03 Nov-03 Jul-04 Mar-05 Nov-05 Jul-06 Mar-07
BUS
Power, Thermal, Propulsion, Mechanisms all Nominal
Attitude Control: Nominal Performance– Momentum wheels & all redundant units: unserviceable
– Control using magnetorquers only, except short term
TT&C: Nominal Operations– Redundant down-link Xmitter reduced capability
– Degraded operation feasible after prime failure
PAYLOAD
SAR Antenna: Nominal Operations
SAR System: Nominal Operations, no redundancy
OBR: Nominal Operations, one unit only (One d/l per day)
S7SCW
S7 and S2/S4
S7 and W2
Background MissionBackground Mission
Future Plans
• Continue to use satellite resources prudently so as to prolong satellite life.
• Emphasize maintenance and safety, not undertake performance enhancements, and minimize risks.
• Continue Operations Transition Planning to allow smooth transfer from RADARSAT-1 to RADARSAT-2 operations, utilization and markets.
• RADARSAT-1 Ops funding in place until March 30, 2009, this ensuring overlap with RADARSAT-2 Ops.