| 摘要 |
<p>A graphic recording system for use with a multiple channel underwater sonar system. The recording system includes a plurality of memories, each for storing information received over a different channel of the sonar system. One or more channels may carry side scan sonar information, while another may carry sub-bottom sonar information, etc. The information from the channels is received and stored in the memories simultaneously. The recording system further includes a graphic line recorder which is responsive to the receipt of a sequence of signals for producing on chart paper a line trace representation of the signals. A control unit controls the storage of information in and retrieval of information from the memories and application of the information to the graphic line recorder in such a manner that the information may be applied to the recorder in various sequences and at various rates. This allows the production of graphic displays of information from selected information channels, and having selectable distance or time scale factors. The recording system also includes data inverting apparatus for selectively inverting information supplied to the recorder so that either so-called positive or negative traces can be produced.</p> |
