Accession Number:

AD0626592

Title:

CW DETECTION TECHNIQUES.

Descriptive Note:

Technical memo.,

Corporate Author:

ELECTRONIC DEFENSE LABS SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF

Personal Author(s):

Report Date:

1965-11-19

Pagination or Media Count:

59.0

Abstract:

Three techniques were investigated as possible schemes for improving the detectability of a Continuous-Wave CW signal within a large Radio-Frequency RF bandwidth when a minimum of detection time is available. Each technique is compared to a conventional sweeping receiver. Two of the techniques employ post-detection integration as a means of obtaining sensitivity without imposing undue sweeping accuracy and stability that is required for predetection integration techniques. While post-detection integration is less efficient in terms of sensitivity-search rate capability, it is less complex to implement than predetection techniques. These techniques are based on the premise that by using basically less complex equipment operating in parallel channels, a system could be built that had comparable capability at a lower cost. It would also have greater reliability, even though a greater mass of equipment would be required. The other technique investigated employs a phase-coherent multiple-frequency local oscillator LO, or picket fence, as a means of providing multiple-signal outputs that are summed coherently before detection, whereas noise outputs are summed incoherently as an attempt to improve signal detectability. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE