Problems of computer aided radar target tracking temporarily based on angle information only

Given a point of time after which especially range and Doppler information of a radar will be jammed and the remaining information can be taken as bearings, the problem of supporting an already conducted track past the initial point of jamming within certain bounds was considered. Under some additional assumptions (especially of a deterministic kind) an estimate, sharp in some cases, of all points reachable from the position at the initial point of jamming was given with respect to all direction findings thereafter. The whole analysis was done on the essential premises that only one fixed radar is available for direction finding and bounds of the maneuverability with respect to the target are known.