Radar telemetring system

Abstract

Abstract A radar telemetering system for pinpointing targets employs means for defining, on the basis of incoming echo pulses, a line or plane of referance dividing the space into two off-boresight zones. The radar receiver supplies signal pulses to a range-gate selector in response to the arriving echoes, the selector controlling in turn an off-boresight-angle discriminator whose dc-output voltage readjusts the selector in a sense tending to reduce the discriminator output to zero. The present invention relates to radar systems for pinpointing a target in a telemetering radar, more particularly but not exclusively to airborne telemetering radar aystems for use in air to ground attack by aircraft. An object of the present invention is to improve such radar systems to make them as accurate as possible without greatly increasing their weight, size, complexity or production costs. The radar receiver described herein is capable of defining a line or at least a plane in space with the aid of a conventional device called an ''''angle discriminator''''. The radar receiver further includes a conventional range-gate selector. According to the invention the radar receiver comprises a servocontrol loop so designed that, on the one hand, the reflected wave energy arriving at this receiver gives rise to echo pulses supplied to a range-gate selector which in turn controls an angle discriminator and that, on the other hand, the range gate or telemetering window of this selector is shifted by a d-c voltage obtained from the output of the discriminator, preferably through the intermediary of an amplifier, in a direction which tends to nullify this output voltage. Such a d-c voltage, as is well known per se, corresponds in sign and magnitude to the deviation of the target position from the reference line or plane established by the discriminator.

Inventors

• 👤 B Daugny
• 👤 J Schifrine

Bibliographic Details