monopulse


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monopulse

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In a monopulse radar, the antenna has four multiple beams. The four antenna signals are combined in the beam former to give a signal corresponding to the sum i.e., A + B + C + D, vertical difference beam, i.e., (A + D) − (B + C) and a horizontal difference beam, (A + B) − (C + D). The sum beam and vertical difference beam patterns are shown above. When these sum and differences are compared in the processor shown above, both the amount of target movement off the antenna boresight and its sense, that is up and down, can be found. This is simultaneously sensed in the horizontal plane and the results used to drive the antenna onto the target direction.
A radar technique using four overlapping pencil beams. Two of these are for azimuth, while the other two are for elevation. The overall circuitry is such that when the target is in the center, there is no current flowing in the system.
References in periodicals archive ?
A radar threat can be select among five types, pulse type search radar, continuous wave (CW) type search radar, monopulse radar with range and angle tracking, monopulse Doppler radar with range, angle, and velocity tracking, and monopulse CW radar with angle and velocity tracking, and an electronic attack can be selected among seven types: barrage and spot noise jamming, RGPO and RGPI range deceptive jamming, VGPO and VGPI velocity deceptive jamming, and no jamming.
Since the sea surface is highly nonstationary and the three channels of monopulse radar have different antenna patterns, when the same distribution is used to model the clutter of three channels, for three channels, the model parameters within the same range cell may be different, and, for each channel, they vary with range.
Encouraged by this, we focus on the effects of sea clutter on angle measurement performance of wideband monopulse radar.
Poli, "Synthesis of monopulse sub-arrayed linear and planar array antennas with optimized sidelobes," Progress In Electromagnetics Research, Vol.
Randazzo, "Optimization of the directivity of a monopulse antenna with a subarray weighting by a hybrid differential evolution method," IEEE Antennas and Wireless Propagation Letters, Vol.
Sarnoff Medal for Outstanding Achievement in Engineering, for his work on the AN/FPS-16 and AN/FPS-49 monopulse tracking radars.
The Phase IV/V contract includes new multifunction military radars, new monopulse secondary surveillance radars to be delivered by Thomson-CSF, modifications to military radar sites and integration of the new radars into the FLORAKO system, the statement added.
A main reflector, a dichroic subreflector, and S and X-band monopulse tracking feeds comprise the system.
The contract awarded to Hensoldt France SAS covers the delivery of 134 MSR1000I (monopulse secondary radar) destined for integration on the French Armys MISTRAL missile launchers and MARTHA air defence command and control stations.
Their cooperation will create the optimum solution for their customers by combining Hensoldt's primary radar airport surveillance radar, its monopulse secondary surveillance radar and Raytheon's Mode S monopulse secondary surveillance radar, said a statement.
The Civil Aviation Authority of the Philippines (Caap) issued a notice to airmen, advising them of the scheduled corrective maintenance of the Tagaytay monopulse secondary surveillance radar (MSSR).
Monopulse radar antenna is widely used in tracking and direction of arrival applications.