Abstract: An acoustic, underwater, telemetry system between two vehicles, a free-rung, deep-operating, sonar platform, or Sonaray vehicle, to overcome refraction, and a surface ship to provide processing of the sonar data gathered by the Sonaray vehicle. The telemetry system is required to communicate analog sonar information, digital command to control the platform, and digital information concerning the status of the platform, between the Sonaray vehicle and the surface ship. The Sonaray concept requires more than 32 channels of analog information for sonar data transmission, each corresponding to a particular received azimuthal beam and each having an information bandwidth of 1 kHz. The output of the analog channels consists of raw data from the search sonar. Because of the long range and very high reliability of the transmission required for the status and control channels, sonar processing by cross-correlation is used to search in both range and doppler.

Abstract: A computer controlled machine tool contouring system having a cutting element which is positioned relative to a workpiece support table. An actuating means controls the workpiece support table to synchronously rotate about a first axis and slide along a second axis in response to a set of control signals. The actuating means further controls the cutting element to translate along a third axis (the third axis being parallel to the first axis and perpendicular to the second axis) in response to a further set of control signals. The control signals are generated by a control means from stored data signals which are representative of the coordinates of points on the desired workpiece contour, the desired pressure angle of the cutting element at each contour point, the current radius of the cutting element, and the desired cutting element motion along the third axis.