1 / 8

LAT Operations Scenario Subsystem Meetings

This training covers the phases of LAT operations, commanding overview, subsystem operations, MOC monitoring, and contingency identification. Topics include LAT commanding processes, subsystem commands during various operation modes, contingency plans, MOC responsibilities, and monitoring critical data.

abalog
Download Presentation

LAT Operations Scenario Subsystem Meetings

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LAT Operations Scenario Subsystem Meetings

  2. Agenda • Define LAT operation phases • Overview of LAT commanding • Describe subsystem operations • Identify potential contingencies and actions • Identify MOC monitoring and activities

  3. LAT Operations Phases • I&T • Pre-FSW • Post-FSW • Spectrum • L&EO • LAT turn-on • Initial checkout • First year • Survey mode • Second and subsequent years • Pointed observation • Survey mode

  4. LAT Commanding during On-orbit Operations • ISOC identifies one or more command mnemonics and any associated parameters and upload files to accomplish the desired function • Command and files are validated on testbed • Command mnemonics and files are transmitted to GLAST Science Support Center (GSSC) • Integrate guest investigator requests and instrument commands into observatory timeline • Send command information to MOC • MOC schedules TDRS link for commanding (or use a pass routinely scheduled for SSR dump) • MOC uses ITOS and LAT database to create LAT commands from the command mnemonics • Commands are loaded into an Absolute Time Sequence (ATS) that is transmitted to spacecraft • Spacecraft sends ATS commands to LAT at the assigned times • Files are uploaded in real time and may be committed at that time or later via an ATS command

  5. How the ISOC Commands the LAT

  6. Subsystem Operations • What subsystem-related commanding occurs during: • Initial checkout • Survey mode • Pointed observation • Scope of commanding • How many commands per day, week or month? • Size of files • Real-time or ATS • Are there any special requirements? • Pointing dependency (attitude dependency impacts TDRS scheduling) • Criticality of commanding

  7. Contingency Plans • What are some possible anomalous conditions? • Symptoms of a problem • What data is being monitored by LAT? • What data is being monitored by spacecraft? • What needs to be monitored by MOC/ISOC?

  8. MOC Responsibilities • What housekeeping data would MOC look at? • What diagnostic data would be meaningful for MOC? • What response does MOC take for alert data? • Notify ISOC and perform contingency procedure • Notification only

More Related