| タイトル | A Direct Broadcast Operations Concept for the HyspIRI Mission |
| 著者（英） | Silverman, Dorothy; Hengemihle, Jerry; Mandl, Daniel; Rabideau, Gregg; Chien, Steve A. |
| 発行日 | 2010-04-25 |
| 言語 | eng |
| 内容記述 | HyspIRI is evaluating a X-band Direct Broadcast (DB) capability that would enable data to be delivered to ground stations virtually as it is acquired. However the HyspIRI VSWIR and TIR instruments will produce 1 Gbps data while the DB capability is 15 M bps for an approximate 60x oversubscription. In order to address this data volume mismatch a DB concept has been developed that determines which data to downlink based on both: 1. the type of surface the spacecraft is overflying and 2. onboard processing of the data to detect events. For example when the spacecraft is overflying polar regions it might downlink a snow/ice product. Additionally the onboard software will search for thermal signatures indicative of a volcanic event or wild fire and downlink summary information (extent, spectra) when detected, thereby reducing data volume. |
| NASA分類 | Earth Resources and Remote Sensing |
| 権利 | Copyright |
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