McMurdo Communications Architecture for Polar Environmental Satellite Data Retrieval

Transcription

1 McMurdo Communications Architecture for Polar Environmental Satellite Data Retrieval Authors Dr. Chet Wolejsza Mr. Doug Whiteley Mr. Joe Paciaroni

2 NPOESS Mission NPOESS Constellation includes Two Orbit Planes (1330A, 1730A) Data from the Eumetsat s MetOp Satellite Augments NPOESS (0930D) Baseline NPOESS architecture includes a globally distributed network of small, unmanned ground receptors at fifteen locations around the world, connected by a global WAN. 2

3 SafetyNet TM Baseline Architecture Baseline SafetyNet TM architecture includes a globally distributed network of small, unmanned ground receptors at fifteen locations around the world, connected by a global WAN. One of these locations in the National Science Foundation (NSF) base at McMurdo Station, Antarctica. Operation at McMurdo created the need for providing wide band data capacity for McMurdo to the SafetyNet TM WAN. Existing NSF antennas have been modified d to support Ku band commercial communications satellite owned by Optus of Australia. (Arrangement made with Optus to modify their D1 satellite design to cover McMurdo

4 Concept of Operations NPOESS Baseline Concept 1. Sense phenomena 2. Downlink raw data 3. Transport data to X and L Centrals for processing bands Ka-band Field Terminals Monitor and control Satellites and Ground Elements SafetyNet TM Receptors Global fiber network connects 15 receptors to Centrals 4. Process raw data into EDRs and deliver to Centrals Mission Management Center (Suitland) Alternate MMC Page 4 Full IDP Capability at each Central NOAA, Air Force, and 2 Navy sites

5 NPOESS Baseline Architecture with Existing NASA Supported Missions

6 Architecture Description The McMurdo multi-mission architecture modifies the baseline NPOESS era networking capabilities to/from McMurdo to allow new end users (missions) to use the ground station capabilities at McMurdo Add capability to share the satellite link across the missions Provide a network capability to/from each of the mission sites NPOESS Baseline missions sites to/from McMurdo are: NSF at Centennial, CO NPOESS at AFWA, NESDIS, FNMOC, NAVO New Missions sites to/from McMurdo being added are: EUMETSAT at Darmstadt (delivery of data from the MetOp Polar environmental satellite) NASA at Goddard d (delivery of data from various NASA missions) i DMSP at AFWA (delivery of half orbit data to improve data latency) NASA to Provide a Metop Capable Front End Processor in McMurdo This capability upgrades existing low data rate on legacy NSF link. NPOESS to Provide S-band receive capability (modified d NPOESS receptors) to support DMSP mission NPOESS to Provide backup downlink site for satcom link

7 NPOESS plus MetOp, and Integrated NASA Operations Multi-Mission Communications System Adds: Support for EUMETSAT s Metop mission (Ku Band Satcom, FEP, and SafetyNet TM WAN) Wide band network connectivity for NASA missions (Ku Band Satcom and backhaul)

8 Additional DMSP Support Multi-Mission Mission Communications System adds: Support for DMSP mission (modified SafetyNet TM Receptors, Network link via Ku Band Satcom, and terrestrial backhaul to AFWA)

9 Second Satcom Downlink Site in Perth Multi-Mission Mission Communications System adds: Satcom link diversity (2 nd ground station near Perth) Mitigation for rain outages observed at existing Belrose satcom ground station

10 McMurdo Multi-Mission Architecture and Data Flow... NASA Sats NSF Apps WAN Optimization Firewall Metop A,B NASA MG1/ MG2 Other NASA Missions Metop Receiver RS-422 ECL Firewall ACU NPOESS C1, C2 Metop PPS GO Server NPOESS PPS GDS, M&C M&C SMD Firewall TCP Accel (SCPS) BW Mgmt MicroWave (McMurdo- Black Island) Satcom (Black Island- Belrose) WAN (Belrose - Mission Processing) DMSP F17,F18 NPOESS NR1/2 NPOESS Receiver RS-422 ECL RTD DMSP Receiver M&C ACU M&C NSF NASA Metop NPOESS/MMCS DMSP NPOESS SMD DMSP Server M&C Fine Smooth DMSP Firewall

11 End-to-end McMurdo Multi-Mission Communications NSF Polar Services (Centennial, CO) NPOESS Processing Centers (Suitland, AFWA, FNMOC, NAVO) 155 Mbps (OC-3) MW 60Mbps Optus 60/20 20Mbps Optus POP Denver Belrose 60Mbps* Various Shared with Suitland Central NPOESS C&S (MMC Suitland, MD) McMurdo Station Black Island Optional Backup Downlink Perth Sydney Frankfurt AT&T AVPN Omaha Washington, DC Dedicated DMSP Circuit 5Mbps (TBR) DMSP T&C (Suitland) DMSP Processing Center (AFWA) 20Mbps (TBR) Manhattan Pre-existing 2 x OC-3 FNMOC SATCOM Link NPOESS Provided AT&T Access Circuit New MMCS AT&T Access Circuit NASA IONET Centrals Processing WAN Local Area Network (LAN) Legend * Even though spec d at 60Mbps, AT&T providing 75Mbps as their standard rate Eumetsat Processing Center (Darmstadt, Germany) NASA McMurdo C&S (TBD) NASA IONET NASA Processing Center (GSFC)

12 Conclusion McMurdo offers significant latency advantages for Environmental Satellite Data Collection. Integral Element in the SafetyNet TM Architecture 95% of fdata in 28 minutes or less. Allows Multi-Mission support to MetOp and DMSP Environmental Satellite Systems Reduced data latency to ~ One Half Orbit. Improved Support for NASA Supported Missions with Higher Bandwidth available