Abstract: A weapon system and projectile are disclosed. The projectile incorporates a rheological fluid, the viscosity of which is adjustable in the presence of an appropriate field of energy. The weapon system includes a launching device (e.g., a gun) for firing the projectile and an energy field generator coupled to the launching device. The energy field generator provides the appropriate field of energy about the projectile to increase the viscosity of the rheological fluid. The projectile can be non-lethal when the rheological fluid has not been subjected to the field of energy and can be made more lethal when the rheological fluid has been subjected to the field of energy.

Abstract: A detection system for detecting a target flying over water, which includes a detector positioned to receive radiation reflected by the target off water, and producing a detector output signal having an amplitude proportional to the amount of received radiation, a high-pass filter for passing portions of the detector output signal having a frequency greater than a prescribed threshold frequency, and for blocking portions of the detector output signal having a frequency lower than the prescribed threshold frequency. The prescribed threshold frequency is sufficiently high to ensure that only the portions of the detector output signal produced by the radiation reflected by the target off the water are passed by the high-pass filter, and that portions of the detector output signal produced by solar glitter are not passed. In a specific embodiment, the system is designed to be installed on a ship for the purpose of detecting low-flying, fast-moving targets, such as cruise missiles.