초록 ▼

In a monopulse radar, a system is included to adaptively assess a detected threat in accordance with the relative bearing representative measurements thereof to determine the collision potential of the threat with the radar. The monopulse radar is operative to detect at least one potential threat an

In a monopulse radar, a system is included to adaptively assess a detected threat in accordance with the relative bearing representative measurements thereof to determine the collision potential of the threat with the radar. The monopulse radar is operative to detect at least one potential threat and to track the threat through a sequence of time increments beginning with the detection thereof. For each time increment, a signal representative of the relative bearing of the detected threat is derived, forming a sequence of relative bearing representative signals respectively corresponding to the sequence of time increments. From the derived relative bearing signals, the assessor system forms, at each of a selected number of increments, a signal representative of an adaptively updated initial approach bearing measurement of the detected threat with respect to the radar, a signal representative of an adaptively filtered estimate of an instantaneous relative bearing measurement of the detected threat with respect to the radar, and a signal representative of the level of confidence of the generated instantaneous relative bearing measurement signals. A comparison test is conducted at each of the selected number of time increments for detecting a deviation between correspondingly generated initial approach and instantaneous relative bearing measurement signals which is greater than the corresponding level of confidence signal, the event being indicative of a non-collision bearing behavior of the detected threat.

대표청구항 ▼

A monopulse radar operative to detect at least one potential threat and to track said threat through a sequence of time increments beginning with the detection thereof, wherein the improvement includes a system for assessing said detected threat adaptively in accordance with the relative bearing the

A monopulse radar operative to detect at least one potential threat and to track said threat through a sequence of time increments beginning with the detection thereof, wherein the improvement includes a system for assessing said detected threat adaptively in accordance with the relative bearing thereof with respect to said radar to determine the collision potential thereof with said radar, said system comprising: means for deriving a signal representative of said relative bearing of said detected threat for each time increment to generate a sequence of relative bearing representative signals respectively corresponding to said sequence of time increments; means for generating a first signal for each of a selected number of time increments based on a signal weighting function of said relative bearing representative signals derived for the sequence of time increments from threat detection to said corresponding selected time increment, inclusively; means for generating a second signal for each of said selected number of time increments based on a signal weighting function of a predetermined number of most recently derived relative bearing representative signals with respect to said corresponding selected time increment; means for generating a third signal for each of said selected number of time increments based on a function representative of the fluctuations in the relative bearing representative signals generated for the sequence of time increments from threat detection to said corresponding selected time increments, inclusively; and means for compairing, at each of said selected number of time increments, the deviation between said correspondingly generated first and second signals with said corresponding generated third signal to determine the collision potential of said detected threat with said radar.