Near-Imaging Field Tower Implementation (NIFTI)
Abstract
The Naval Research Laboratory's Midway Research Center (MRC) located in Stafford, Virginia, has a mission to provide highly precise and repeatable signals for tailored, precision calibration and testing of national and tactical systems. Their numerous assets include three 60-ft diameter antennas, which are required to provide highly accurate RF signals. Because of their size and location, they are difficult to characterize through farfield measurements, which is as much as 25 miles away, nor is it possible through close-in nearfield measurements. A midrange calibration system has been designed and is being implemented that transforms these nearfield measurements into a farfield pattern. This provides corrected effective isotropic radiated power (EIRP), tilt angle, axial ratio, boresight, and gain, which can then be applied to the command and control system for the antennas. The Near Imaging Field Tower Implementation (NIFTI) system has proven itself during prototype tests to accurately derive farfield parameters from nearfield measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2005
- Accession Number
- ADA523009
Entities
People
- D. L. King
Organizations
- United States Naval Research Laboratory