| Image Navigation and Registration (INR) |
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A set of image quality metrics pertaining to the location errors of Earth-referenced instrument pixels in Level-1b data. Navigation is absolute pixel location accuracy, and the various registration requirements specify relative pixel location accuracy. Within-frame registration and line-to-line registration are relative pixel-to-pixel location errors within a single frame. These errors result in image distortion and shear within a single image. Frame-to-frame registration is the relative motion of a given pixel in sequential frames. This error produces jumps when successive images are looped. Channel-to-channel registration is the offset between spectral channels for a given pixel location. These errors affect multi-spectral products derived from raw imagery. |
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Independent Inhibit |
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Two or more inhibits are independent if no single credible failure, event or environment can eliminate more than one inhibit. |
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| Independent Verification and Validation |
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A system analysis, test, and evaluation effort that is conducted by an entity independent of the development organization or the customer organization. |
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| Information rate |
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The rate of earth observation data prior to coding or other overhead that contributes to the total transmission rate. |
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| Inhibit (Space Segment) |
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A design feature that provides a physical interruption between a stimulus and a function. |
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Initial Operational Capability (IOC) |
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The event when the first GOES-R series mission has satisfactorily completed flight testing, and the complete flight and ground system has been verified as meeting all functional, performance, and availability requirements for a complete set of instruments at either the East or West operational stations. |
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| Initial Risk List |
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An initial set of risks identified by GOES-R Series Program. These risks will be identified through brainstorming sessions and interviews conducted by the Risk Management Coordinator with the Program team, and will include preliminary analysis of Program schedules, technical performance, budgets, and resource allocations. |
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| Inspection |
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The process of measuring, examining, gauging, or otherwise comparing an article or service with specified requirements. |
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| Instrument |
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For GOES-R the instruments are: ABI, EXIS, GLM, Magnetometer, SEISS, and SUVI. |
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| Instrument data |
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Data output from an instrument which consists of raw science data, instrument engineering telemetry, and associated spacecraft telemetry. |
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| Instrument Unit |
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Means the sensor unit, electronics box (if applicable), or other units of the instrument. |
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| Interface Control Document (ICD) |
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A specification of the mechanical, thermal, electrical, power, command, data, communications and other interfaces that system elements must meet. |
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| Interoperable |
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A characteristic of multiple systems that work together or communicate seamlessly. |
