USA As Represented by Secretary of the Navy

Gerald R Martel

Joseph B Lopes

Carl R Foreman

Gregory B Jones

A real-time data acquisition system for a remote, unmanned underwater vehe includes an array of sensors within the vehicle which gather data from the environment surrounding the vehicle. The sensor data is digitized and stored in an imbedded computer on the unmanned vehicle. To display the data, the imbedded computer transfers the digital data over a local area network connection to a second computer aboard a mother ship. The second computer converts the digital data back to analog data for display. The data can also be analyzed and processed depending on test requirements. To test the unmanned vehicle performance, the vehicle can be operated adjacent the mother ship with the local area network connection in place. In this mode, the imbedded computer transfers the digital data to the second computer as the data is being stored in the imbedded computer.

Real-time data acquisition

The method of the present invention minimizes the time required to display portion of a time sampled data file. A plurality of compressed data files are generated based on the time sampled data file. Each of the compressed data files is defined by a corresponding unique compression ratio such that each compressed data file contains fewer data points than the original time sampled data file. Each compressed data file characterizes the original time sampled data file. The compressed data files are stored in a data storage device for subsequent retrieval. A resolution factor is defined for each of the compressed data files. One of the compressed data files is then selected based on the resolution factor and the portion of the time sampled data file requested for display. The selected compressed data file is transferred from the data storage device to the display device.

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Bristol, RI, United States of America

Gerald R Martel