Sensor: EOIR Sensor To Target Metrics

Time dependent metrics for a unique EOIR Sensor-Band / Target pairing.

Type: Time-varying data

Availability: Reports | Graphs | Dynamic Displays | Strip Charts

Name Dimension Type Description
Time DateFormat Real Number Time.
Range to Target DistanceUnit Real Number The distance from the sensor to the target.
Effective 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.
Point target solid angle SolidAngle Real Number The solid angle subtended by a point source target at the sensor aperture.
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.
Effective 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.

STK Programming Interface 11.0.1