Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent Radar Distance Test to Airborne Planes - Application Note 5991-2184EN c20140923 [6]

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Keysight Technologies
81100 Family of Pulse
Pattern/Generators Radar
Distance Test to Airborne Planes



        Technical Overview
Introduction

     Keysight Technologies, Inc. pulse generators are used for testing radar communication
     systems in the military industry, and as demonstrated in this technical overview, the
     aviation industry.

     A trigger pulse train of double pulses is sent from the control tower's radar system to an
     airborne plane. The plane responds with a standard signature signal which is sent back to
     the control tower. This occurs up to 450 times per second. The control tower receives the
     signal, recognizes its signature, and then analyzes the delay to determine the distance
     between the tower and the airborne plane.

     To test a radar system on a regular basis, an 81150A is used to simulate the signature signal.
     Varying the delay from the external trigger to the start of the output signal, various distances
     from the control tower can be simulated. This delay can be up to 2 ms. Therefore, it has to
     be created by leading zeroes added to the signature signal.

     Due to the legal safety requirements, it is critical to have very accurate edge placement
     of the pulses. The 81150A has a frequency accuracy of 

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