www.radartutorial.eu Radar Basics

Multiple Hypothesis Tracker

Track 121
Track 131

Figure 1: Example given of difficult situation for radar tracker

Track 121
Track 131

Figure 1: Example given of difficult situation for radar tracker

Track 121
Track 131

Figure 1: Example given of difficult situation for radar tracker

Multiple Hypothesis Tracker

The Multiple Hypothesis Tracker (MHT) allows a track to be updated by more than one plot at each update, creating multiple possible tracks. As each radar update is received every possible track can be potentially updated with every new update. Over time, the track branches into many possible directions.

The MHT calculates the probability of each potential track and typically only reports the most probable of all the tracks. For reasons of finite computer memory and computational power, the MHT typically includes some approach for deleting the most unlikely potential track updates. The MHT is designed for situations in which the target motion model is very unpredictable, as all potential track updates are considered.