Abstract: A xenon short-arc lamp system includes a choice of two anode heatsinks with different mechanisms for thermally interfacing to, and supporting, e.g., a 300W-400W xenon short-arc lamp. One heatsink, allows a conventional mounting in which a split ring and clamp combination accommodate and clamp to a screw-on base adapter fitted to the 300W-400W xenon short-arc lamp. The lamp can then be operated at 300W. The second heatsink accommodates the 300W-400W xenon short-arc lamp directly without the adapter. A large threaded stud on the lamp is screwed directly into the heatsink and is seated such that a large orthogonal flat planar annular ring area also makes a tight thermal connection. The lamp can then be operated at its higher limit because of the much improved thermal resistance.

Abstract: A wireless handheld GPS-enabled device and supporting system comprises a wireless CPU that functions as a host processor, a GPS chipset to provide GPS measurements, and a GPS application hosted by the wireless CPU. Other applications are also hosted by the wireless CPU and are provided with position solutions from the GPS application. The GPS application calls for GPS aiding information from an Internet server via a TCP/IP socket provided by a GPRS link supported by the wireless CPU. Location area identifier (LAI) and “breadcrumb” information are provided to the GPS application so it can skip having to make a z-count determination during initialization.

Abstract: A bootstrapping tandem navigation receiver system includes two independent navigation receivers. A first uses coherent detection and makes carrier-phase pseudorange measurements. A second uses non-coherent detection and a longer predetection interval and thus can acquire satellites in very weak signal environments. The second navigation receiver delivers a bootstrapping message to the first receiver that allows it to directly acquire the satellites without searching for them. The first navigation receiver then drives to find carrier phase lock and produces its more accurate measurements.

Abstract: A roving extended range high sensitivity satellite positioning system receiver provides position fixes in adverse signal conditions as low as minus 150 dbm and with as few as three satellites by measuring the bit phase of the navData message and the codephase, and finding a simultaneous solution. Previous position fixes that were obtained in the vicinity by earlier rovers are deposited in an indexed database for consultation. A cellular phone system can be used to communicate the vicinity ID's and their database entries.

Abstract: A product security system includes an RFID chip and antenna that are polymerized onto separable parts of a commercial product package. The RFID chip includes a unique serial number that can be interrogated by a wireless reader. A database of such unique serial numbers associated with particular manufacturing production runs is used in a method to detect counterfeiting. The RFID chip and antenna are embedded such that attempts to remove or transfer them will be obvious to an inspector.