Abstract: Methods and apparatus to provide sonobuoys that can be deployed on a sea bottom and surface upon detection of an object of interest. Upon reaching the surface, the sonobuoy can transmit information, such as position information, to a receiver on an aircraft, satellite, and/or remote location.

Abstract: The sonar array system includes a receive array of hydrophones and a transmit array of acoustic projectors disposed on a common axis. The sonar array system can be coupled to a ship and deployed and recovered from a single winch and through a single ship hull penetrator. When towed through water by the ship, the sonar array system provides a substantially horizontal transmit/receive array.

Abstract: The present invention improves upon conventional windshear data processing techniques in three mutually exclusive aspects. First, the present invention provides an improved method and system for detecting microburst downdraft candidates. The improvement lies in its capability of detecting multiple candidates in range. Because of the added capability to detect multiple candidates in range, the present invention also provides an improved method and system for azimuthal association of the multiple candidates in range to define an accurate locus of headwind and tailwind pairs. Second, the present invention provides an improvement in that it utilizes a non-circularly symmetric spatial model to compute the vertical component of a total hazard factor. Third, the present invention provides an improvement in the accurate detection of small radii microbursts by correcting bias present in the data from which the small radii microbursts may be detected.