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| Single-String Global Positioning System, With PGSC and GPS |
| DTO 700-14 |
| In-Cabin |
| Prime: Kevin Kregel | Principal Investigator: Ray Nuss, Wayne Hensley, Michael Sarafin |
| Backup: Dom Gorie |
| Overview |
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This DTO demonstrates the performance and operation of the Global Positioning System (GPS) during orbiter ascent, on-orbit, entry, and landing phases. A modified military GPS receiver-processor and the existing orbiter GPS antennas will be used, and GPS data will be downlinked during all mission phases. A payload and general support computer (PGSC) hard drive may be used (optional) to record GPS data during ascent, entry, and/or extended orbital phases. The single-string GPS supports operational use of GPS as a Shuttle navigation aid. This flight test of the single-string GPS configuration--basically an extension of an earlier GPS development flight test--entails the following: · GPS receiver output data will be downlinked through the flight forward 2 (FF2) multiplexer/demultiplexer (MDM) and operational forward 2 (OF2) MDM for real-time and postflight analysis. · A PGSC may be connected to the receiver's RS-422 instrumentation port to collect data during ascent, entry, and/or orbital phases (optional). · The crew may be requested to perform various activities, such as exercising certain GPS SOP and navigation commands and/or cycling power to the GPS receiver. Requirements for this option are defined specifically for each mission to achieve the following objectives whenever feasible: (a) incorporate GPS to NAV in OPS 201 (PASS), (b) incorporate GPS to NAV in OPS 301 (PASS and BFS), and (c) perform GPS receiver commands (via crew keyboard item entries) during OPS 201. |
| History/Background |
| DTO 700-14 has previously flown on nine Shuttle missions. It last flew on STS-96. |
Editorial/Technical Comments: ShuttlePresskit
