Passive sensor

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Two threats are detected four light seconds distant.

Long-range scan passive sensor data when received is four seconds old

Sensor devices that provide detections without emitting any energy signals that can themselves be detected. The detections can arise as a result of radiation from the target or the reflection of ambient energy on the target. Shipskin is specifically designed to minimise the energy radiated by a ship, supported by a heat sump.

  • Most passive electromagnetic spectrum (EMS) sensor systems operate in the visible, infrared, thermal infrared, and microwave portions of the electromagnetic spectrum to provide sufficient information for pattern recognition software to determine the presence of a target and support target profiling. High resolution thermal sensors utilize infra-red emmissions to detect a target. The effectiveness can be limited subject to the seethrough conditions. A ship can enact Emissions control to minimise its visibility to passive EMS sensors.
    • A bigeye provides long-range surveillance in the visible spectrum.
  • G-sensors provide additional data to detect the g-dimple of a ship and to detect hyperdrive transits.
  • Neutrino detectors can be used to detect targets through the emissions of unshielded reactors.
  • Echo-scan is an archaeological technique used to analyze objects.

Passive scanning is used especially when the activation of active sensors would betray the presence of own ship.


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