Interfering signal sensor for angle tracking radars

Claim 2

In an angle tracking radar receiver, first means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second means for generating a second signal representing the angular deviation relative to said axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, means for sensing the closure within a predetermined range interval of said predetermined target and another target situated at lesser range, said means for sensing producing a second control signal upon said range closure, utilization signal generating means, and means for applying said first and second control signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 3

In an angle tracking radar receiver, first means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second means for generating a second signal representing the angular deviation relative to said axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, means for generating a third signal at a predetermined time prior to the reception of the signal representing said predetermined target, means for sensing the concurrence of said third signal and a received target signal to produce a second control signal, utilization signal generating means, and means for applying said first and second control signals to said lAst-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 4

In an angle tracking radar receiver, first means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second means for generating a second signal representing the angular deviation relative to said axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, means for generating a third signal at a predetermined time prior to the reception of the signal representing said predetermined target, means for sensing the concurrence of said third signal and a received target signal to produce a second control signal, utilization signal generating means, and means for applying said first and second control signals to said lAst-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 5

In an angle tracking radar; said radar including continuously operable means for receiving target signals and first actuable means connected to said receiving means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target; second actuable means connected to said receiving means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target corresponding to the first occurring of the target signals received during each radar repetition interval, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means connected to said receiving means for producing a first and a second series of gating signals recurrent at the radar repetition rate, each said second gating signal occurring a fixed time later than a corresponding one of said first gating signals within each radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signal representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means resettable at the radar repetition rate and connected to said receiving means for producing a third series of gating signals, each said third gating signal being produced at a time determined by that of the reception of the first occurring of the target signals received during each radar repetition interval, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to said receiving means, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a received target signal, utilization signal generating means, and means for applying said first and second signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 6

In an angle tracking radar; said radar including continuously operable means for receiving target signals and first actuable means connected to said receiving means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target; second actuable means connected to said receiving means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target corresponding to the first occurring of the target signals received during each radar repetition interval, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means connected to said receiving means for producing a first and a second series of gating signals recurrent at the radar repetition rate, each said second gating signal occurring a fixed time later than a corresponding one of said first gating signals within each radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signal representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means resettable at the radar repetition rate and connected to said receiving means for producing a third series of gating signals, each said third gating signal being produced at a time determined by that of the reception of the first occurring of the target signals received during each radar repetition interval, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to said receiving means, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a received target signal, utilization signal generating means, and means for applying said first and second signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 7

In an angle tracking radar receiver, first actuable means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second actuable means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means for producing a first and second gating signal recurrent at the radar repetition rate, said second gating signal occurring a fixed time later than said first gating signal within the radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signal representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means resettable at the radar repetition rate for producing a third gating signal, said third gating signal being produced at a time determined by that of the reception of the first occurring of the target signals received during the radar repetition interval, said first occurring signal representing said nearest target, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to receive all target signals received during the radar repetition interval, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a receiveD target signal, utilization signal generating means, and means for applying said first and second control signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 8

In an angle tracking radar receiver, first actuable means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second actuable means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means for producing a first and second gating signal recurrent at the radar repetition rate, said second gating signal occurring a fixed time later than said first gating signal within the radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signal representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means resettable at the radar repetition rate for producing a third gating signal, said third gating signal being produced at a time determined by that of the reception of the first occurring of the target signals received during the radar repetition interval, said first occurring signal representing said nearest target, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to receive all target signals received during the radar repetition interval, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a receiveD target signal, utilization signal generating means, and means for applying said first and second control signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

Claim 9

In an angle tracking radar receiver, first actuable means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second actuable means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means for producing a first and a second series of gating signals recurrent at the radar repetition rate, each said second gating signal occurring a fixed time later than a corresponding one of said first gating signals within each radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signals representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means for producing a third series of gating signals recurrent at the radar repetition rate, each said third gating signal being produced at a time determined by that of the reception of the signal representing said nearest target, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to receive all target signals received during the radar repetition interval, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a received target signal, alert signal generating means, and means for applying said first and second control signals to said last-named means to produce said alert signal upon the concurrence of said first and second control signals.

Claim 10

In an angle tracking radar receiver, first actuable means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second actuable means for generating a second signal representing the angular deviation relative to said radar tracking axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, first gate generating means for producing a first and a second series of gating signals recurrent at the radar repetition rate, each said second gating signal occurring a fixed time later than a corresponding one of said first gating signals within each radar repetition interval, said second gating signal being produced at a time determined by that of the reception of the signals representing said predetermined target, means for applying said second gating signal to said first actuable means for the actuation thereof, second gate generating means for producing a third series of gating signals recurrent at the radar repetition rate, each said third gating signal being produced at a time determined by that of the reception of the signal representing said nearest target, means for applying said third gating signal to said second actuable means for the actuation thereof, gating means connected to receive all target signals received during the radar repetition interval, means for applying said first gating signal to said gating means for the actuation thereof, said gating means producing a second control signal upon the concurrence of said first gating signal and a received target signal, alert signal generating means, and means for applying said first and second control signals to said last-named means to produce said alert signal upon the concurrence of said first and second control signals.