|
|
|
|
| SIGI Orbital Attitude Readiness |
| DTO 700-21 |
| Payload Bay |
| Overview |
|
The objective of DTO 700-21 is to demonstrate the operation of the space integrated Global Positioning System/inertial navigation system (SIGI) on orbit. The SIGI is intended to be the primary GPS source for the International Space Station (ISS) and the primary navigation source for the crew return vehicle (CRV). The ability of the SIGI to perform GPS attitude determination in space has not been demonstrated. Data from this DTO will be used to evaluate the SIGI design before it is used on the ISS or CRV. The payload consists of the SIGI in a pressurized container on a GPS antenna mounting structure (GAMS). The SIGI has RF connections to four antenna assemblies, which are mounted on the corners of the GAMS. The experiment package is mounted on the integrated cargo carrier in the payload bay. A payload and general support computer (PGSC) located in SPACEHAB is used for commanding and data storage. Data from two star trackers mounted on the GAMS will be collected by a separate PGSC inside SPACEHAB. This is the second flight of DTO 700-21. 
|
Editorial/Technical Comments: ShuttlePresskit
