Abstract: A method for detecting a buried non-conductive pipe includes transmitting, by a radio frequency (RF) transmitter, guided RF energy through one end of the non-conductive pipe, receiving, by a RF receiver, electromagnetic signals due to RF energy leaks in one or more locations along the non-conductive pipe, and processing, by one or more processors, the received signals to determine a location of the non-conductive pipe. A system for detecting a buried non-conductive pipe includes a RF transmitter configured to transmit guided RF energy through one end of the non-conductive pipe, a RF receiver configured to receive electromagnetic signals due to RF energy leaks in one or more locations along the non-conductive pipe, and one or more processors configured to process the received signals to determine a location of the non-conductive pipe.

Abstract: A method for detecting a buried non-conductive pipe includes transmitting, by a radio frequency (RF) transmitter, guided RF energy through one end of the non-conductive pipe, receiving, by a RF receiver, electromagnetic signals due to RF energy leaks in one or more locations along the non-conductive pipe, and processing, by one or more processors, the received signals to determine a location of the non-conductive pipe. A system for detecting a buried non-conductive pipe includes a RF transmitter configured to transmit guided RF energy through one end of the non-conductive pipe, a RF receiver configured to receive electromagnetic signals due to RF energy leaks in one or more locations along the non-conductive pipe, and one or more processors configured to process the received signals to determine a location of the non-conductive pipe.

Abstract: An apparatus and method for mapping a water pathway. A group of sensors can be employed for detecting one or more features associated with the water pathway in a direction of flow through the water pathway. A buoyant vessel maintains the sensors, and the sensors assist in compiling data indicative of the detected features. The velocity in the direction of flow through the water pathway can be then determined based on data indicative of the detected feature(s). A mapping of the water pathway can be thereafter generated utilizing the velocity with respect to the features detected by the sensors.

Abstract: An apparatus and method for mapping a water pathway. A group of sensors can be employed for detecting one or more features associated with the water pathway in a direction of flow through the water pathway. A buoyant vessel maintains the sensors, and the sensors assist in compiling data indicative of the detected features. The velocity in the direction of flow through the water pathway can be then determined based on data indicative of the detected feature(s). A mapping of the water pathway can be thereafter generated utilizing the velocity with respect to the features detected by the sensors.

Abstract: A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a host computer, which individually addresses each sensor to instruct that sensor to be in an interrogate mode or responder mode. When a sensor is in interrogate mode, it measures distance from a neighboring sensor using radar (continuous wave phase difference) measurements. When a sensor is in responder mode, it receives, delays, and returns a signal received from a neighboring sensor.

Abstract: A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a host computer, which individually addresses each sensor to instruct that sensor to be in an interrogate mode or responder mode. When a sensor is in interrogate mode, it measures distance from a neighboring sensor using radar (continuous wave phase difference) measurements. When a sensor is in responder mode, it receives, delays, and returns a signal received from a neighboring sensor.