EOIR Sensor To Target Metrics
Time dependent metrics for a unique EOIR Sensor-Band / Target pairing.Available for these objects: Sensor
Type: Time-varying data.
Availability: Reports | Graphs | Dynamic Displays | Strip Charts
Pre-data required: "<Target TruncObjectPath> <EOIR SensorConfiguration Name>" - e.g. "Satellite/Sat1 Config1"
Data Provider Elements
| Name | Dimension | Type | Description |
|---|---|---|---|
| Time | Date | Real Number or Text | Time. |
| Range to Target | Distance | Real Number | The distance from the sensor to the target. |
| In-band target irradiance | PowerFluxDensity | Real Number | Irradiance at the sensor aperture from a target object whose angular extent is smaller than the effective instantaneous field of view, i.e. a point source target. |
| Total noise equivalent irradiance | PowerFluxDensity | Real Number | The total sensor noise for point source targets, including scene photon noise and sensor dark noise, expressed in irradiance units and referred to the sensor aperture. |
| Scene photon NEI | PowerFluxDensity | Real Number | The noise equivalent irradiance (NEI) due to scene photon noise from the background and one component of the total NEI. Only defined when the target is a point source. |
| In-band target radiance | PowerFluxIntensity | Real Number | The average apparent radiance at the sensor aperture from a target object whose angular extent is larger than the effective instantaneous field of view, i.e. an extended area target. |
| Effective background radiance | PowerFluxIntensity | Real Number | The apparent radiance at the sensor aperture from the area immediately behind or adjacent to the target. |
| Total noise equivalent radiance | PowerFluxIntensity | Real Number | The total sensor noise for extended area targets, including scene photon noise and sensor dark noise, expressed in radiance units and referred to the sensor aperture. |
| Scene photon NER | PowerFluxIntensity | Real Number | The noise equivalent radiance (NER) due to scene photon noise from the background and one component of the total NER. Only defined when the target is an extended area source. |
| Signal to noise ratio | Unitless | Real Number | The ratio of the difference in sensor response between target-containing pixel(s) and the local surrounding pixels to the total noise. For point source targets the background is assumed to be uniform (spatial clutter is neglected) and the target is assumed to be exactly centered on a pixel. |
| Geometric instantaneous field of view footprint | Small Area | Real Number | The geometric instantaneous field of view (FOV) footprint at the distance to the target. |
| Effective instantaneous field of view footprint | Small Area | Real Number | The effective instantaneous field of view (FOV) footprint at the distance to the target. |
| Target Peak Spectral Irradiance | SpectralPowerFluxDensity | Real Number | The largest irradiance at the sensor aperture from a point target along the sensor's band pass, i.e., the wavelength with the highest irradiance. |
| Target Peak Spectral Radiance | SpectralPowerFluxIntensity | Real Number | The largest apparent radiance at the sensor aperture from an extended area target. |
| Number of Target Pixels | Unitless | Real Number | The number of pixels the geometry of the target takes up in pixel space in the sensor scene. This can be a noninteger value. |
| Target geometric centroid X(Pixels) | Unitless | Real Number | The X position in the sensor scene of a target in pixel space. The centroid of the object is calculated in pixel space based on the projected image, not based on a 3D model, center of mass, or center of volume. |
| Target geometric centroid Y(Pixels) | Unitless | Real Number | The Y position in the sensor scene of a target in pixel space. The centroid of the object is calculated in pixel space based on the projected image, not based on a 3D model, center of mass, or center of volume. |
| Target Solid Angle | SolidAngle | Real Number | The amount of the field of view of the sensor taken up by the target object. |