Resources Contact Us Home
Multi-stage maximum likelihood target estimator

Image Number 3 for United States Patent #7266042.

A multi-stage maximum likelihood target estimator for use with radar and sonar systems is provided. The estimator is a software implemented algorithm having four computational stages. The first stage provides angle smoothing for data endpoints thereby reducing angle errors associated with tie-down times. The second stage performs a coarse grid search to obtain the initial approximate target state to be used as a starting point for stages 3 and 4. The third stage is an endpoint Gauss-Newton type maximum likelihood target estimate which determines target range along two time lines. The final refinement of the target state is obtained by the fourth stage which is a Cartesian coordinate maximum likelihood target estimate. The four-stage processing allows the use of target historic data while reducing processing time and computation power requirement.

  Recently Added Patents
Decentralized processing network
Powder for layerwise manufacturing of objects
Systems, methods and computer program products supporting provision of web services using IMS
Regulating a supply voltage provided to a load circuit
Mounting structure, electro-optical apparatus, and touch panel
Inkjet ink
Stability control system with body-force-disturbance heading correction
  Randomly Featured Patents
Tunable coupling network
Apparatus for accurately bonding leads to a semi-conductor die or the like
Cutting insert for chip forming machining
Apparatus and method for cleaning a video player/recorder
Styrene-based resin composite material
Flame trim for motorcycle side bags
Car charger
Enhanced protection of semiconductors with dual surface seal
Cover layer for electrical conductors or semiconductors