We optimize the performance of multiframe target detection (MFTD) schemes u
nder extended Newman-Pearson (NP) criteria. Beyond the per-track detection
performance for a specific target path in conventional MFTD studies, we opt
imize the overall detection performance which is averaged over all the pote
ntial target paths. It is shown that the overall MFTD performance is limite
d by the mobility of a target and also that optimality of MFTD performance
depends on how fully one can exploit the information about the target dynam
ics. We assume a single target situation and then present systematic optimi
zation by formulating the MFTD problems as binary composite hypotheses test
ing problems. The resulting optimal solutions suggest computationally effic
ient implementation algorithms which are similar to the Viterbi algorithm f
or trellis search. The optimal performances for some typical types of targe
t dynamics are evaluated via Monte-Carlo simulation.