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How to Track and Detect Small Targets with Radar

How to Track and Detect Small Targets with Radar

Small target detection is necessary in coastal waters for performing search and rescue operations or for any situation requiring the detection of hard-to-see targets. Detecting targets in radar video involves separating the signal-of-interest from noise. There are many sources of noise, including clutter originating from land, sea and weather.  The challenge is to reliably detect real target of interest as quickly as possible, without picking out false targets that are really just background clutter such as sea waves or flocks of birds at sea.  Much of tracking is a compromise If we have a true target in the data, we can define Pd as the probability of detecting that target; this will increase over time as more data is processed and confidence in the target builds up. If there is no true target in the data, we can define Pf as the probability of creating a false target. Clearly we want Pd to be as large as possible, so that it’s possible to identify a new target quickly, and for Pf to be as small as possible so that the likelihood of false alarms is minimised. In practice, we have to strike a balance between Pd and Pf. The requirement for the speediest acquisition of...

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