An increased angular resolution AMPLITUDE total-difference monopulse SYSTEM

摘要

The proposed invention relates to the field of radio engineering and can be used in monopulse radar systems, phased array, carrying out search and tracking radar on the angular coordinates of objects in conditions of deliberate noise.; Use of the device as part of a typical overview monopulse radar direction finding when the pulse signal source to intense background noise interference on the main lobe of the antenna pattern may provide a substantial increase in angular resolution. It is possible to estimate the range to the target is concealed by an obstacle up to the resolution element and bearing estimate with an error that depends on the angular base group "producer-objective" and intensity of radiation.; A technical effect of the proposed device is attained by additional functional processing of the output signal receiver. It is obtained by using information contained in the value of the ratio of amplitude sum and difference signals, in particular, the reciprocal of the normalized difference signal (normalized angular error signal) generated monopulse direction finder.; The primary use of the proposed utility model is to improve the angular resolution of the amplitude sum-and difference monopulse overview system providing noise interference under the action of a pulsed detection signal provided when the angular position of its source to the source of interference is a fraction of the width of the antenna beam. In this case up to a resolution element will be provided to obtain distance estimation signal source, and, under certain conditions and to assess its bearing. Ultimately, this will allow the radar using the proposed device to ensure greater objectivity in the assessment of air and noise conditions.; The goal is achieved in that the receiving device model amplitude monopulse sum-difference system additionally introduced specialized computing device, which includes a signal processor and a decision device. The inputs of analog-to-digital converter receiving device model amplitude monopulse sum-difference system receives radio frequency signals to intermediate frequency amplifiers outputs a sum channel and a difference antenna. Analog-to-digital converter converts input signals into digital binary codes, which are then used in the proposed computing device according to the developed algorithm.; The structure of the proposed utility model includes: multiplying device quadratic amplitude detector, divider, a lowpass filter calculation unit device signal sampling device, a non-coherent accumulator, the buffer memory, decision device.