Active sensor

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Two threats are detected four light seconds distant.

Long-range scan active sensor data requires a directed sensor sweep, with its energy taking four seconds to reach the target, and another four seconds for the return to be detected.

Active sensors output pulses of energy to illuminate a target and measure the reflection.

  • Electromagnetic spectrum (EMS) sensors can cover the entire electromagnetic spectrum.

Active sensors are an effective means of locating a target and providing sufficient data for threat profiling to be performed.

However, active scanning has the drawback of advertising the location of own ship and requiring the output of detectable energy. For this reason, sprint missiles are often launched based on passive sensor data and use their own active sensors to acquire the target.

The effectiveness of active sensors can be reduced by the use of Electronic Counter Measures (ECM) and by general seethrough conditions.


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