초록 ▼

1. In a monopulse radar receiver system for determining the angular co-ordinates of a pulsed RF radiation source, the combination comprising: AN RF signal processing circuit adapted to convert a directional antenna input signals to inversely related pairs of computer input pulses; A PAIR OF AUTOMATI

1. In a monopulse radar receiver system for determining the angular co-ordinates of a pulsed RF radiation source, the combination comprising: AN RF signal processing circuit adapted to convert a directional antenna input signals to inversely related pairs of computer input pulses; A PAIR OF AUTOMATIC GAIN CONTROL PRE-AMPLIFIERS CONNECTED TO SAID PROCESSING CIRCUIT ADAPTED TO SIMULTANEOUSLY RECEIVE AND AMPLIFY THE PAIRS OF INPUT SIGNALS; A DIFFERENCE CIRCUIT CONNECTED BETWEEN THE OUTPUTS OF EACH PAIR OF PRE-AMPLIFIERS FOR PROVIDING A DIFFERENCE SIGNAL PULSE; AMPLIFYING MEANS CONNECTED WITH SAID DIFFERENCE CIRCUIT FOR AMPLIFYING SAID DIFFERENCE SIGNAL PULSE; A LEADING-EDGE GATE CIRCUIT CONNECTED WITH SAID AMPLIFYING MEANS, ADAPTED TO BE OPERATIVELY TRIGGERED AT THE PULSE-REPETITION RATE OF THE PULSES PROPAGATED BY THE RF radiation source for accepting only the leading edge of each amplified difference signal pulse; MEANS FOR TRIGGERING THE GATE CIRCUIT; A PULSE INTEGRATOR CIRCUIT CONNECTED WITH THE OUTPUT OF SAID GATE CIRCUIT ADAPTED TO PROVIDE AN OUTPUT SIGNAL WHICH IS A FUNCTION OF THE POSITION OF THE SOURCE OF RADIATION; DIRECT CONNECTING MEANS JOINING THE OUTPUT OF SAID INTEGRATOR WITH ONE PRE-AMPLIFIER OF SAID PAIR FOR DIRECTING THE INTEGRATOR OUTPUT SIGNAL TO THE ONE PRE-AMPLIFIER FOR DIRVING THE GAIN THEREOF IN A FIRST DIRECTION; AN INVERTER CIRCUIT CONNECTING THE OUTPUT OF SAID INTEGRATOR WITH THE OTHER PRE-AMPLIFIER OF SAID PAIR, ADAPTED TO INVERT AND COMBINE A REFERENCE VOLTAGE WITH THE OUTPUT OF SAID INTEGRATOR CIRCUIT TO PROVIDE AN INVERTED GAIN CONTROL SIGNAL HAVING A REFERENCE IMPOSED THEREON FOR DRIVING THE GAIN OF THE OTHER PRE-AMPLIFIER IN A SECOND DIRECTION OPPOSED TO SAID FIRST DIRECTION; AND A SECOND DIFFERENCE CIRCUIT CONNECTED WITH THE OUTPUT OF SAID INTEGRATOR AND THE OUTPUT OF SAID INVERTER CIRCUIT FOR DERIVING A DIFFERENCE SIGNAL INDICATIVE OF THE ANGULAR CO-ORDINATE OF THE SOURCE OF PULSED RF radiation, relative to said system, when the difference signal is driven to a zero valve.

대표청구항 ▼

In a monopulse radar receiver system for determining the angular co-ordinates of a pulsed RF radiation source, the combination comprising: an RF signal processing circuit adapted to convert a directional antenna input signals to inversely related pairs of computer input pulses; a pair of automatic g

In a monopulse radar receiver system for determining the angular co-ordinates of a pulsed RF radiation source, the combination comprising: an RF signal processing circuit adapted to convert a directional antenna input signals to inversely related pairs of computer input pulses; a pair of automatic gain control pre-amplifiers connected to said processing circuit adapted to simultaneously receive and amplify the pairs of input signals; a difference circuit connected between the outputs of each pair of pre-amplifiers for providing a difference signal pulse; amplifying means connected with said difference circuit for amplifying said difference signal pulse; a leading-edge gate circuit connected with said amplifying means, adapted to be operatively triggered at the pulse-repetition rate of the pulses propagated by the RF radiation source for accepting only the leading edge of each amplified difference signal pulse; means for triggering the gate circuit; a pulse integrator circuit connected with the output of said gate circuit adapted to provide an output signal which is a function of the position of the source of radiation; direct connecting means joining the output of said integrator with one pre-amplifier of said pair for directing the integrator output signal to the one pre-amplifier for driving the gain thereof in a first direction; an inverter circuit connecting the output of said integrator with the other pre-amplifier of said pair, adapted to invert and combine a reference voltage with the output of said integrator circuit to provide an inverted gain control signal having a reference imposed thereon for driving the gain of the other pre-amplifier in a second direction opposed to said first direction; and a second difference circuit connected with the output of said integrator and the output of said inverter circuit for deriving a difference signal indicative of the angular co-ordinate of the source of pulsed RF radiation, relative to said system, when the difference signal is driven to a zero valve.