What does PDF stand for?

Precision Direction Finding

This definition appears very rarely and is found in the following Acronym Finder categories:

Military and Government
Science, medicine, engineering, etc.

Other Resources:

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Portable Document Format (Adobe Acrobat) Positive Definite Function (mathematics) Post-Doctoral Fellowship Postal Distribution Facility Postscript Document Format (common but incorrect) Powder Diffraction File Power Delay Profile Power Distribution Frame Power Down Flag Precision Direction Finder		Premier Diesel Fuel (low sulfur diesel) Pretty Damn Funky Pretty Damn Funny Pretty Darn Fast Primary Direction of Fire Principal Direction of Fire Printer Definition File Printer Description File (File Name Extension) Probability Density Function Probability Distribution Function

Samples in periodicals archive:

During the Hawaii-based RIMPAC TAPA II exercise, the Northrop Grumman-led MFEW team successfully demonstrated such key performance factors as precision direction finding, high sensitivity, the ability to rapidly detect and classify advanced threats, and mitigation of shipboard RF interference while onboard the U.

United States : Northrop Grumman Achieves Key Technology Readiness ...

Perrino, Chairman, "The competition for this program came from companies with far greater assets than Sensys Technologies and the new precision direction finding system adds an exciting capability to our existing state-of-the-art ESM systems.

Sensys Technologies Announces Notification of a $2.1 Million Contract ...

This creates a worst case scenario for the already difficult problem of performing precision direction finding on a surface ship.

United States: Northrop Grumman Successfully Demonstrates ...