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
Plants and seeds of hybrid corn variety CH089600
Audio processing in a multi-participant conference
Plants and seeds of hybrid corn variety CH979678
Functional component compensation reconfiguration system and method
Analysis of stress impact on transistor performance
Systems and methods for electronic verification of vehicle insurance coverage
Assembly for providing an aligned stack of two or more modules and a lithography system or a microscopy system comprising such an assembly
  Randomly Featured Patents
Visual display with illuminators for gaze tracking
Quick-mount support system for telescoping slide
Photoresist composition
Semiconductor device and method for manufacturing semiconductor device
Fuse for rifle-grenade
Methods of manufacturing semiconductor devices
Lighted fittings for bathing installations
Clock processing logic and method for determining clock signal characteristics in reference voltage and temperature varying environments
Electrode layer for capacitors, method of manufacturing the electrode layer, unit sensor using the electrode layer, and tactile sensor using the unit sensor