book

DIY Comms and Control for Amateur Space

by Sandy Antunes

June 2015

Beginner

156 pages

3h 20m

English

Make: Community

Read now

Unlock full access

Conventions Used in This BookSafari® Books OnlineHow to Contact Us
Talking to MachinesParts of a Comm SystemComm for the ImpatientTwo Walkie-TalkiesFlatsatBidirectional Bench Test HardwarePower, Range, and LicensingHigher Power LicensingEstablishing a Ground NetworkBreaking International LawHousekeeping DataHousekeeping: Bus and Instrument Are SeparateAlerts and PagesLimits Displays: Green, Yellow, RedData IntegrityRequirements ChecklistPerformance RequirementsSecurity & Anti-JammingSpacecraft OrbitsFrequency AllocationPhysical ConstraintsArchitecture ChoicesComparing a Space-Based Network to a Ground-Based NetworkNASA’s Tracking and Data Relay Satellite System (TDRSS)NASA’s Deep Space Network (DSN)Near Earth Network
Transceiver ConceptsWavelength and FrequencyDual Band and ModulationDopplerInterferenceADCPacketsAPRSSoftware-Defined Radio
Downlink OnlyOperations ChoicesStart with the Mission PayloadComm QuantitiesGround NetworkRanging and Orbit DeterminationGround System Design ProductsMission Phases
OverviewExtended Case: Private Comm SatFuture IdeasRegulatory SolutionsIARUSmartphonesHigh-Altitude Ballooning and Guerrilla RadioDemystifying the Basic TechnologyRegulatory and PermissionsHam Technician’s LicenseScenariosSafeholdGround SimSoftwareCompare and contrastRelaysLine of Sight/Direct to GroundRelaysPrivate Networks
Defining OrbitsThe Six Classic Orbital ElementsTLEsOrbit DeterminationTimeSatellite TimeGround TracksContact Passes
AllocationsData PrioritiesExtended Example of Command via Text MessagingMore Realistic Bandwidth AllocationEncodingLink BudgetUnitsLink Budget EquationGoing DeeperData Budget
Antenna ShapeCommon Spacecraft AntennaCommon Ground Station AntennaAntenna Size and FrequencyImpedance and SWRAntenna MaterialsPower, ERP, and EIRP
Data, Error Rates, and AvailabilitySecurityHistorical Satellite Hacking
ConOpsHigh-Level ConOps DesignOps Center NetworkTrendingScience Operations Center (SOC)Science MonitoringHandling Anomalies

Content preview from DIY Comms and Control for Amateur Space

Chapter 9. Concept of Operations

ConOps

ConOps is your concept of operations, occasionally called OpsCon. Mission Operations exists to perform normal operations and resolve anomalies. Operations has four core functions: call them Commanding, Monitoring, Trending, and Science. The Mission Operations Center (MOC) handles commanding the spacecraft and assessing the status of the spacecraft via HK data, as well as trending. The capture and archiving of the science data is the responsibility of the Science Operations Center, or SOC. The MOC and SOC can be the same entity, it’s just that one deals with the satellite bus, the other with the instruments and data. From the hardware view, your satellite consists of a bus + payload. These deliver three ...