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Sea clutter refers to the unwanted echoes or reflections of the RADAR signal caused by the surface of the sea. These reflections can create a background noise on the RADAR display, making it difficult to detect and distinguish other targets.
The STC circuit is a critical component in the RADAR system that automatically adjusts the receiver's sensitivity based on the time delay of the received echoes. It gradually reduces the sensitivity at shorter ranges (closer to the RADAR antenna), where sea clutter is more likely to occur, while maintaining higher sensitivity at longer ranges where the RADAR needs to detect distant targets.
By controlling the suppression of sea clutter through the STC circuit, the RADAR system can optimize its performance and enhance the visibility of targets against the cluttered background.
Mnemonic: "STC - Suppressing Targets at Close range"
Last edited by kacela. Register to edit
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