Target-Handling Capacity of a Phased-Array Tracking Radar

The factors which affect the target-handling capacity of an agile-beamelectronically scanned multitarget-tracking radar are reviewed and analyze.Consideration is given to the choice of strategy for dwell allocation amongtargets, the choice of trajectory extrapolation algorithms for target tracking, and the determination of saturation target acquisition rates. Emphasisis placed upon radar systems with control computers having limited speed and memory, and recommendations are made for allocation strategy and targetytracking algorithms, based on uniform sampling, to be used in maximizing thetarget-handling capacity in this situation.     

A New Method of Position Estimation Using Bearing Measurements

A method of locating radio emitters anywhere on the surface of the Earth, by using bearing measurements, is presented. The method associates planes of bearing with the measured bearings, and characterizes these planes by their unit normals. The emitter is located by finding the unit vector from the Earth's center that minimizes the sum of squares of its inner product with the normal vectors. The solution is found in terms of the eigenvalues and eigenvectors of a 3 × 3 matrix.