Abstract: A propane burner assembly is provided for producing a fast cook-off environment. The burner assembly includes a frame, parallel delivery pipes, a pair of manifolds with a corresponding pair of feed lines, a supply line, a fuel reservoir, a valve and an igniter pilot. The frame geometrically defines a platform region with a plurality of corners. The frame includes at least two opposite sides. The delivery pipes are supported by the frame. Each delivery pipe has a plurality of orifices. The manifold pair supplies propane to the delivery pipes. The manifolds are respectively disposed adjacent the two opposite sides. The feed lines transport propane to the manifolds. The fuel reservoir stores the propane. The supply line delivers propane from the fuel reservoir to the feed lines. The valve controls delivery of propane to the feed lines. The igniter pilot initiates combustion. Activating the valve enables propane to eject through the orifices to propagate combustion within the frame.

Abstract: A method of locating the source of an unknown signal is provided that includes calculating a differential offset for a signal for each of a plurality of positions within a region in which the transmitter must lie, for each of a series of times m with respect to first and second signal relays and respective first and second receivers, the positions of the signal relays and receivers being known, generating a cross-ambiguity function (CAF) using data corresponding to samples of the unknown signal received at the first and second receivers via the first and second signal relays respectively, estimating the level of noise in the CAF, and using this data to obtain a measure of the likelihood that the source is located within defined areas within the region, where the differential offsets are differential time offsets, or differential frequency offsets, or both. The method provides location which is unconditionally convergent.