Abstract: Systems, methods, and computer-readable media for fault detection are disclosed. At least one controller may identify a plurality of values where each value corresponds to a monitored parameter or a measured parameter. The at least one controller may determine a respective deviation between each of the plurality of values and an expected value, and may further determine whether at least one of the respective deviations exceeds a threshold. Upon a determination that at least one of the respective deviations exceeds the threshold, a fault may be detected. Each of the plurality of values may be associated with a respective device that monitors or measures the value. A detected fault may be associated with the device that monitors or measures the value determined to deviate from the expected value by more than the threshold.

Abstract: An apparatus and method for determining, in real time, the key parameters of a three phase system electrical generator's output. A pair of reference vectors in quadrature (orthogonal) is phase-locked to a selected input open delta line to line voltage vector. Preferably, the cosine reference vector is locked 45° out of phase from the selected input vector whereby a best projection of the input vector onto the quadrature pair is provided and increases accuracy in subsequent magnitude and phase calculations. The phase-locked reference vectors provide a basis for computing the magnitude and phase angle for the remaining open delta line to line voltage vectors and three line to neutral current vectors.

Abstract: A system is described for rapidly and accurately determining the topography of land masses as well as individual x,y,z coordinates of discrete targets. The system incorporates a laser altimeter, a laser scanning/steering system with sensor for receiving reflected laser beams, a global positioning system or other non-ground-based reference means, a video camera, computers, and processing software. The system, mounted to an aircraft, selectively scans or steers a pulsed laser altimeter over a swath or point on earth. A Global Positioning System (GPS) or other non-ground-based reference means records the aircraft's position, altitude, and time of position. Concurrently, a computer system records and time tags the laser's range, scanner angles, and airborne platform's roll, pitch, and heading. The processing software correlates all events and measurements using time to determine precise x,y,z coordinates of the ground/targets.