Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method and system for establishing enhanced key when terminal moves to enhanced universal terminal radio access network (UTRAN)
Stabilised prostaglandin composition
Display apparatus
Automatic engine oil life determination with a factor for oil quality
Distributed image acquisition, storage, and backup system
Control device for radiation imaging apparatus and control method therefor
System and method for managing self-refresh in a multi-rank memory
  Randomly Featured Patents
Paper towel holder
Interlock for a seat recliner mechanism
Organic electroluminescent device
Real image mode variable magnification finder optical system
Method for treating respiratory diseases
Method for selective denitration of tobacco
Adornment lamp
Field effect transistor having impurity regions of different depths and manufacturing method thereof
Compact continuous ground plane system
Adjustable stacking chair