Systems data is acquired and merged from multiple sources in various formats to a single, time-correlated, composite stream for processing, distribution, real-time display and storage archival. Segments of post-mission data are immediately available on portable media.

Telemetry

WATR telemetry tracking systems consist of multiple fixed antennas at Dryden and a fleet of mobile systems for deployment to specified locations. The antennas support downlinked telemetry and video signals in C-, L-, and S-bands, and can transmit uplinked commands in either L- or S-bands. The antennas track targets from horizon to horizon, and are certified for full on-orbit capability. Downlinked telemetry may be received in either analog or digital format. Mobile operations provide telemetry tracking for test missions outside local airspace boundaries.

Communications

The Radio Frequency (RF) Communications facility provides more than 40 ultra-high-frequency (UHF), very-high-frequency (VHF), and high-frequency (HF) transmitter receivers, and a UHF flight-termination system. An extensive range intercommunication system consists of trunk lines, communication panels, public address systems, commercial telephone systems and military ground-communication networks. An integrated communications system, including ground-based fiber optics and orbital satellites, is also used to relay telemetry, radar, audio and video data among Dryden facilities, NASA centers, other government agencies and industry partners.

Radar

Two high-accuracy, C-band instrumentation radars provide time-space positioning information on research aircraft and Earth-orbiting spacecraft to the Test Range mission control center. Each radar can track targets out to a distance of 3,000 nautical miles with accuracies to 0.0006 degrees in angle and 30 feet in range. The radar antennas accept acquisition data in various formats, record it onsite, and provide post-flight radar data in the appropriate engineering parameters.

The WATR operates a Differential Global Positioning Satellite (DGPS) ground station to uplink error corrections to research vehicles. Downlinked GPS information embedded in the aircraft telemetry signal provides positioning information to ground controllers. Federal Aviation Association radar-surveillance data is also available in the WATR’s mission control center.

Video

Numerous fixed and mobile camera systems acquire operational video data for flight monitoring, safety and mission control. WATR video systems include a long-range, broadcast-quality, high-definition optical system providing day and night (including infrared) coverage of local airspace. Other video systems provide coverage of the flight line, ramp areas and runways.

Mobile video vans provide coverage in remote areas, with the capability to relay live-action imagery via microwave links to the mission control center or other facilities. Downlinked video from research vehicles or chase aircraft can be received in C-, L-, or S-band frequencies. Video recording is provided on VHS, Super VHS, Beta Superior Performance, DVD, and other high-definition media.


Radio Frequency Communications Facility (left) and RF Antenna (right). Image credit: NASA