Abstract: A queuing management system for managing a queue of waiting vessels or persons having a pass-through point may include a camera system configured to generate one or more images of the queue and sequential images of the pass-through point. It may include an image processing system configured to calculate information indicative of the anticipated delay in the queue, the rate of passage through the pass-through point, the number of vessels or persons in the queue, the number of vessels or persons that have passed through the pass-through point, the type of vessel, and/or unusual movement of a vessel or person in the queue, all based on the images from the camera system. Related processes are also disclosed.

Abstract: A diversity receiver switches between at least two antennae when the noise level of a processed receiver signal exceeds a predetermined level. A diversity circuit extracts the noise from the receiver signal with a bandpass filter and compares the level of the noise to the predetermined level. When the noise exceeds the predetermined level, the diversity circuit sends a command signal to switching circuitry to switch from the antenna currently responsible for the receiver signal to another antenna. If the noise in the receiver signal indicative of the signal received by the now-coupled antenna still exceeds the predetermined level, then the switching circuitry continues to switch between antennae until an acceptable noise level is achieved. A sync separator circuit may be provided if antenna switching is desired during the vertical or horizontal blanking intervals.