The MX system includes a number of missiles which are regularly shifted among a greater number of vertical shelters. Each missile has a receiver for receiving information via its shelter's buried antenna. A simple and low-cost report back to high authority is provided by adding a low power transmitter and phase controller to each missile. The transmitters make use of the existing buried antennas to transmit from the MX field. The necessary power to report back over long range is achieved by the phase-coherent addition of the individual transmission fields from the many low-power transmission sites. The phase controller at each missile site computes the phase shift and baseband bit delay required for its transmitter to achieve wavefront coherence. These are functions of the location of the missile within the MX field, and the location of the higher authority.
Adaptive phased-array transmission system for the MX missile
adaptives phasengesteuertes Uebertragungssystem fuer MX-Raketen
IBM Technical Disclosure Bulletin ; 22 , 9 ; 4243
1980
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