Accession Number:

AD0625944

Title:

A DUAL-MODE PHASE-LOCKED LOOP,

Descriptive Note:

Corporate Author:

HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s):

• Baird,Charles A. ,Jr.

Report Date:

1965-09-30

Pagination or Media Count:

37.0

Abstract:

A dual-mode phase-locked loop is described, and its feasibility in a noisy environment is studied. This study is made through analog computer simulation with signalto-noise ratios of 0.5, 1, and 2. In particular, the acquisition behavior for large initial frequency deviations is examined. It is apparent from the results that the loop is very effective in improving the acquisition range and times, even under noisy conditions. Author

Descriptors:

• *PHASE LOCKED SYSTEMS
• TRACKING
• NARROWBAND
• ELECTROMAGNETIC WAVE FILTERS
• SIGNAL TO NOISE RATIO
• DETECTION
• TARGET ACQUISITION
• GUIDANCE
• SIMULATION
• ANALOG COMPUTERS

Subject Categories:

• Electrical and Electronic Equipment
• Direction Finding

Distribution Statement:

APPROVED FOR PUBLIC RELEASE