Geophysical Survey Systems, Inc.

Alan E Schutz

Jeffrey Ross Feigin

Roger Roberts

Dennis J Johnson

Embodiments of the disclosed technology comprise an air-launched antenna system with interference-rejection technology that operates in analog hardware as well as by way of a digital filtering technique. Using an inline analog hardware filter combined with a digital filter, to determine transversal (and/or recursive) coefficients, in a calibration phase, a measurement system may be configured to remove interference and the effects (such as a delay or temperature variation) which result from use of an analog filter. In this manner, the resulting measurements of a composition of road surface are more accurate and useful.

Highway speed ground penetrating radar system utilizing air-launched antenna and method of use

Embodiments of the disclosed technology comprise a ground penetrating radio device and methods of use for obtaining greater resolution. This is achieved by measuring the composition/reflection off a homogeneous material (e.g., metal plate), determining coefficients to correct the measured/reflection in order to make the measurements look like an idealized reference signal, and then using these coefficients in a digital filter to correct measurements/a reflection off a heterogeneous material, such as a road surface. In this manner, the composition of the heterogeneous material is determined with greater accuracy.

Ultra-wideband radar waveform calibration for measurements of a heterogeneous material

A method and apparatus for determining accurately a coordinate of a transmitting/receiving antenna pair relative to a predetermined reference position. The method includes placing a transmitting antenna in proximity to a reflective strip, transmitting a first signal from the transmitting antenna and detecting a reflection of the first signal received from the reflective strip at the receiving antenna located at a fixed distance from the transmitting antenna. The method further comprises determining a coordinate of the antennas relative to the reflective strip based on a parameter of the reflection. The method may further comprise detecting a second signal received by the receiving antenna from a conductive strip located proximate to the reflective strip, and determining a second coordinate of the antennas based at least on a time difference between transmitting the first signal from the transmitting antenna and receiving the second signal at the receiving antenna.

Method for determining accurately coordinates of a GPR antenna relative to a fixed reference

The present invention provides a security system that can provide a user with data on the directional movement, velocity and location of an object within and around the perimeter of a structure with the use of radio energy. The system comprises a sensor unit having at least one antenna for transmission of a signal into a defined area of the structure. Any intrusion in the area is detected upon a change in the waveform received by the antenna. A received signal is transmitted from the sensor unit to a control unit, comprising, in part, a preprogrammed data processing unit that can determine the movement of the intruder. Utilization of a plurality of sensor units allows the user to obtain additional information on the velocity and location of the intruder. Additionally, as with conventional security systems, the system can provide an electrical signal to activate a sound and/or light device to attract the attention of the intruder and warn others of the intruder's presence.

Impulse radar security system

A ground probing radar system comprising a plurality of antennas for transmitting. Where for each transmitting antenna, an associated individual driver means selectively operable in response to an enabling signal unique to each antenna. Upon receiving a triggering signal, the driver means supplies to its associated antenna a single impulse of power to be radiated. Further providing that a means for supplying the trigger signal to each of the driver means only one at a time, thereby insuring that no two antennas are supplied power to be radiated at the same time.

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Newburyport, MA, United States of America

Alan E Schutz