Constraints and parameters for the system design » History » Version 1
GAY, Adrien, 03/23/2015 09:35 AM
| 1 | 1 | GAY, Adrien | h1. Constraints and parameters for the system design |
|---|---|---|---|
| 2 | 1 | GAY, Adrien | |
| 3 | 1 | GAY, Adrien | # Network constraints |
| 4 | 1 | GAY, Adrien | |
| 5 | 1 | GAY, Adrien | > * Frame format |
| 6 | 1 | GAY, Adrien | |
| 7 | 1 | GAY, Adrien | The application foreseen aims at transmitting multimedia content (video on the downlink), so we choose to use the MPEG-4 coding standard. The associated frame format MP4 is particularly adapted for the encapsulation of multimedia data type. |
| 8 | 1 | GAY, Adrien | |
| 9 | 1 | GAY, Adrien | > * Protocol stack |
| 10 | 1 | GAY, Adrien | |
| 11 | 1 | GAY, Adrien | # Antenna choice |
| 12 | 1 | GAY, Adrien | |
| 13 | 1 | GAY, Adrien | > * On board antenna |
| 14 | 1 | GAY, Adrien | The antenna placed on the aircraft must be compliant with the flight constraints listed in the introduction. Indeed, we should maintain the communication link while the aircraft is performing a turn ( +/- 15° attitude), landing or taking off ( +/- 45° inclination). Therefore, he position of the antenna must be carefully determined in order to be at LOS. |
| 15 | 1 | GAY, Adrien | |
| 16 | 1 | GAY, Adrien | Another constraint is the embedded |
| 17 | 1 | GAY, Adrien | |
| 18 | 1 | GAY, Adrien | > * Ground station antenna |