Sensis Corporation

Saab Sensis Corporation

Marc J Viggiano

Edward M Valovage

David Andrew Rice

Jacobus M Oschmann

Ryan Haoyun Wu

Michael J Gerry

Todd A Donovan

Dana L Hall

Lara Marisa Parks

Kenneth B Samuelson

The present invention provides a system and method for aircraft to determine own position and navigate using a navigation heartbeat signal broadcast on a DME uplink and/or a Mode-S uplink frequency. The present invention enables deep integration between the existing navigation systems (DME interrogation-reply ranges and GPS/WAAS raw TDOA or pseudo range measurements) and the DME heartbeat TDOAs or Mode-S heartbeat TDOAs to provide a highly accurate navigation positioning capability and provide necessary backup capability in lieu of GPS to maintain the necessary RNP/RNAV capability and avoid degrading aircraft operational safety.

System and method for aircraft navigation using signals transmitted in the DME transponder frequency range

A method and system for tracking the position of objects, such as aircraft and ground vehicles around an airport. A transmission from the object is received at a non-imaging surveillance device of known location, the transmission being used to determine the coordinate position of the object within a given time period. Image data for the object is captured by an imaging surveillance device of known location to provide an image of the object within the same given time period. The coordinate position is correlated with the image to provide composite data about the object within the same given time period. The composite data is displayed to a viewer as a visual depiction of the object.

Method and system for tracking position of an object using imaging and non-imaging surveillance devices

A secure system for authenticating the identity of ADS-B systems, including: an authenticator, including a unique id generator and a transmitter transmitting the unique id to one or more ADS-B transmitters; one or more ADS-B transmitters, including a receiver receiving the unique id, one or more secure processing stages merging the unique id with the ADS-B transmitter's identification, data and secret key and generating a secure code identification and a transmitter transmitting a response containing the secure code and ADSB transmitter's data to the authenticator; the authenticator including means for independently determining each ADS-B transmitter's secret key, a receiver receiving each ADS-B transmitter's response, one or more secure processing stages merging the unique id, ADS-B transmitter's identification and data and generating a secure code, and comparison processing comparing the authenticator-generated secure code and the ADS-B transmitter-generated secure code and providing an authentication signal based on the comparison result.

Secure ADS-B authentication system and method

An improved non-contact apparatus and method for reading a surface that has information encoded in a relief pattern thereon, includes an optical transmitter for projecting a line of light onto the relief pattern at a first angle to a normal of the surface; an optical receiver that views the projected line of light at a second angle to the normal of the surface and produces signal data that is representative of an image of the reflection thereon. The image viewed by the receiver has parallactic displacements of the line of illumination that occur at transitions between raised and recessed portions of the relief pattern. The signal data is culled such that only those pixels surrounding the line of light are selected. The culled signal data is then decoded into electrical signals which represent decoded information contained in the relief pattern. The optical receiver can be realized as a plurality of light sensors arranged in a linear, or a two dimensional array, together with suitable focusing optics. The optical transmitter can produce either a fan beam of light or sweep a spot of light across the surface. The optical transmitter, optical receiver, the culling, circuit and the decoding circuit contained within either a portable hand-held unit or a fixed mount unit.

Method and apparatus for non-contact reading of a relief pattern

There is disclosed a non-contact apparatus and method for reading a surface that has information encoded in a relief pattern thereon. The apparatus comprises an optical transmitter for projecting a line of light onto the relief pattern at a first angle to a normal of the surface; an optical receiver that views the projected line of light at a second angle to the normal of the surface and produces a signal that is representative of an image of the reflection thereon. The image viewed by the receiver has parallactic displacements of the line of illumination that occur transitions between raised and recessed portions of the relief pattern. The displacements are detected by a pattern detector which is coupled to the optical receiver and submitted to a decoder. The optical receiver can be realized as a plurality of light sensors arranged in a linear, or a two dimensional array, together with suitable focusing optics. The optical transmitter can produce either a fan beam of light or sweep a spot of light across the surface.

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Manlius, NY, United States of America

Marc J Viggiano