Abstract: Method and device for processing raw GPS data to obtain extremely accurate corrected navigation data. The device is a stand-alone, puck-like GPS receiver/data logger that records raw data according to pre-programmed instructions. Ephemeris data and/or ionosphere prediction data that provide high accuracy for the time and location of data logging are uploaded into data processing software for processing the raw GPS data received via satellite signal. The raw GPS data may be post-processed on an external computing device or processed in realtime in the GPS receiver/data logger. The corrected navigation data thus obtained provides navigation data with submeter accuracy.

Abstract: A GPS data transceiver system capable of transceiving USB and/or RS-232 data between a host computer and a multi-mode GPS-receiver. The USB circuitry is incorporated into the multi-mode GPS-receiver and the RS-232 circuitry is incorporated into the multi-mode GPS-receiver or into an external power source, such as a battery pack. Depending on the data signal from the host computer, the data input/out device functions as a USB device or an RS-232 device.

Abstract: An interface device for functionally connecting a universal GPS receiver with another electronic device. The interface device supports the GPS receiver in a manner that ensures a functional connection between the GPS receiver and the interface device. A battery pack and circuitry providing additional functionality, such as for a data logger, wireless communication with an external device, etc. are provided within the housing of the interface device. The interface device further includes an external connector for connecting to a DC power adapter.