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Trajectory ambiguity for active sensors

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2 Author(s)
Colclough, Douglas D. ; Dept. of Electr. Eng., Univ. of Rochester, NY, USA ; Titlebaum, Edward L.

Trajectory ambiguity for an active sensor is discussed in the context of a linear time-varying channel. This type of ambiguity representation preserves details of target/channel behavior that are lost in a correlative ambiguity function representation. The trajectory diagram, which is a graphical view of radar and sonar, is used to motivate the discussion. Ambiguity manifests as sets of ambiguous target trajectories: different range versus time profiles for a target that produce identical received signal phase. These trajectories provide a "trajectory domain" picture of ambiguity that is useful for signal analysis and signal design.

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Signal Processing, IEEE Transactions on  (Volume:53 ,  Issue: 1 )