A System for Rapid Signal Acquisition, Analysis, and Photographic Recording
Abstract
For many years, one of the basic countermeasures problems has been to find a method for providing a high probability of signal acquisition, rapid signal identification, and a useful storage of the pertinent information. A system developed at the Naval Research Laboratory for this purpose employs, for acquisition, a high-resolution, high-sensitivity super heterodyne receiver which scans the frequency spectrum at a rate of approximately one octave in two seconds. Received signals are displayed as intensity variations in a time-frequency raster on a long persistence (P25) cathode-ray-tube screen. Any signal may be analyzed by interrupting the scan and, by use of a potentiometer which controls the servo motor, manually tuning the receiver to the appropriate frequency on the acquisition display. The use of several potentiometers, which may be selected by push buttons, allows any number of signal frequency positions to be stored for later use.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 09, 1958
- Accession Number
- AD1224916
Entities
People
- J. H. Markell
Organizations
- United States Naval Research Laboratory