Wallops Command and Data Acquisition Station

When you watch the news and see pictures of weather from around the U.S. or the world, you are seeing data from the National Oceanic and Atmospheric Administration's environmental satellites recovered and delivered to either the Wallops or Fairbanks Command and Data Acquisition Station. NESDIS’ Office of Satellite and Product Operations operates the CDASs. They are located in remote locations in Wallops Island, Virginia, and Fairbanks, Alaska, to minimize radio frequency interference that is prevalent in more urban areas. The Cooperative Observer Program backup for the Wallops CDAS is located at Fairmont, West Virginia.

NOAA's environmental satellites provide data from space to monitor Earth to analyze the coastal waters, relay lifesaving emergency beacon information, and track tropical storms. The CDASs acquire, maintain, and distribute a continuous flow of this environmental satellite data, and execute spacecraft commands, nonstop, 24/7.

But, the two stations are not exactly alike—The Fairbanks CDAS primarily focuses on low Earth orbit satellites with a large contracted staff, while the Wallops CDAS focuses primarily on geostationary satellites and is staffed mostly by federal employees. The station also operates NOAA's Polar Orbiting Environmental Satellites, Deep Space Climate Observatory, Advanced Composition Explorer, and remote ground station operations for the U.S. Space Force, and supports the GOES Data Collection System. Additionally, the station provides backup continuity of operations for Search and Rescue Satellite Aided Tracking (SARSAT) and operates the Radio Frequency Interference Monitoring System. In the future, the station will support the Space Weather Follow-On mission, the U.S. Space Force missions, and an Indian space weather mission.

The original Wallops permit was signed in 1965. After construction, the station has continuously provided weather service to the nation. The station also plans, designs, and implements system modifications, tests and evaluates new systems and techniques for satellite tracking and communications, and helps develop emergency procedures to safeguard the spacecraft. If NESDIS’s Satellite Operations Control Center in Suitland, Maryland, is unable to operate, the Wallops CDAS independently executes emergency plans.

The staff at the Wallops CDAS maintains every aspect of the facility. Their efforts allow the station to process over 41.7 megabits/second daily. The Wallops CDAS helps produce over 7 terabytes of data per day for the safety and security of the nation.

Wallops Island

Antenna	Receive Bands	Gain (dBi)	Transmit Bands	Latitude (N)	Longitude (E)	Elevation (m)
26 METER	VHF/L/S	27.0/43.7/48.8		37° 56' 48.080"	284° 32' 28.691"	23.4
14.2 METER	VHF/L/S/X	22.4/43.5/44.1/46.6/55.0	S	37° 56' 48.390"	284° 32' 23.773"	12.6
13 METER A	L/S/X	43.1/44.0/55.0	L/S	37° 56' 50.041"	284° 32' 9.938"	18.0
13 METER B	L/S/X	43.1/44.0/55.0	L/S	37° 56' 50.809"	284° 32' 17.040"	16.3
18 METER A	S	49.0	S	37° 56' 45.158"	284° 32' 22.404"	20.4
16.4 METER HR1	L/S	48.4/50.0	L	37° 56' 43.797"	284° 32' 19.912"	19.9
16.4 METER HR2	L/S	48.4/50.0	L	37° 56' 43.533"	284° 32' 16.476"	20.0
16.4 METER HR4	L/S/X	47.7/50.2/59.6	S/X	37° 56' 46.100"	284° 32' 13.40"
16.4 METER HR5	L/S/X	47.7/50.2/59.6	S/X	37° 56' 44.100"	284° 32' 13.50"
16.4 METER HR6	L/S/X	47.7/50.2/59.6	S/X	37° 56' 47.440"	284° 32' 16.57"
8 METER	L	40.3	S	37° 56' 44.800"	284° 32' 18.350"	9.2
7.2 METER	L	39.1		37° 56' 43.000"	284° 32' 26.000"	7.3
3.8 METER 1	UHF	22.5	UHF	37° 56' 43.200"	284° 32' 19.200"
3.8 METER 2	UHF	22.5	UHF	37° 56' 43.220"	284° 32' 18.640"
3.8 METER 3	UHF	22.5	UHF	37° 56' 43.240"	284° 32' 18.070"
1.2 METER	L	24.0		37° 56' 44.000"	284° 32' 24.000"

WCDAS Aerial Tour

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