Motion Tracking Interferometer Software

Large aperture, high-frequency planar near-field antenna measurements take time, so errors due to thermal drift may affect accuracy. NSI-MI Technologies’ Motion Tracking Interferometer (MTI) option is a software enhancement that addresses this problem and increases measurement accuracy by correcting for thermally induced amplitude and phase measurement drifts. The MTI technique is much more sophisticated than the traditional tie-scan technique since it can monitor and correct for thermal variations in the antenna, antenna mount, planar scanner, and RF equipment and cables. Unlike the tie-scan, MTI provides a multi-degree of freedom measure of the relative rigid body motion between the scanner and test antenna during the test. Additionally, the MTI system provides an estimate of the measurement uncertainty.

Features

• Measurement and Correction of System Thermal Errors
• Analysis of Measurement Uncertainty
• United States Patent number 5,419,631