Abstract: A programmable radio frequency (RF) memory system includes a receiver designed to receive an RF pulse, a memory, a waveform transform module, and a transmitter. The memory stores a digitized version of the RF pulse. The waveform transform module is designed to determine one or more characteristics of the digitized version of the RF pulse, and based on the determined one or more characteristics, transform the digitized version of the RF pulse into a transformed signal. The transformed signal has at least one characteristic that is different than the one or more characteristics. The transmitter is designed to transmit an analog equivalent of the transformed signal. The analog equivalent of the transformed signal and the received RF pulse are coherent.

Abstract: An apparatus for spanning the distance between a fixed first platform and a ovable second platform includes a ramp; a first pivoting junction located between one end of the ramp and the fixed first platform, and a second sliding junction located between the other end of the ramp and the movable second platform. The first pivoting junction accommodates pitch, roll and heave motion between the fixed platform and the ramp and the second sliding junction accommodates elevation changes between the fixed platform and the movable platform. Means are provided to dampening the motion of the ramp. Other means are provided to limit the side to side movement of the ramp.