Abstract: A receiver system is disclosed. The receiver system may include an omnidirectional receiver configured to receive an incoming signal, a directional receiver configured to receive the incoming signal, and an integrity controller. The integrity controller may be configured to determine an integrity of the incoming signal by synchronizing a clock of the omnidirectional receiver and a clock of the directional receiver, receiving an omnidirectional signal of the incoming signal, receiving a directional signal of the incoming signal, translating between a phase of the omnidirectional signal and a phase of the directional signal based on the synchronizing, ensuring a signal equivalency based on the translating, calculating an angle of arrival of the incoming signal based on carrier phase differences associated with the directional signal, and identifying the incoming signal as a trusted satellite signal based on a comparison of the angle of arrival with an expected angle of arrival.

Abstract: A light reflector imaging a high-intensity light beam includes a reflector part shaped as a portion of an ellipsoid, and a reflector part with two parallel edges, shaped as the zone of a sphere. The smaller parallel edge of the spherical reflector part serves as an aperture. The ellipsoidal reflector part has a rectangular opening offset slightly in one direction from its axis of revolution, and large enough to receive a socket. The ellipsoidal reflector part connects to the larger parallel edge of the spherical reflector part to enclose a lamp. A curvilinear reflector part can be attached to the aperture of the spherical reflector part to more narrowly focus the light exiting from the disclosed light reflector. The curvilinear reflector part is a paraboloidal-like shaped tube, which varies in curve and length according to a desired output angle. Other attachments to the two-part reflector assembly include a thin cylindrical tube into which a glass piece is mounted to cover the aperture.