Accession Number:

ADA523009

Title:

Near-Imaging Field Tower Implementation (NIFTI)

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC SPACE SYSTEMS DEVELOPMENT DEPT

Personal Author(s):

Report Date:

2005-01-01

Pagination or Media Count:

4.0

Abstract:

The Naval Research Laboratorys 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.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE