Accession Number:

AD0753693

Title:

Time Domain Measurement System

Descriptive Note:

Final technical rept. 15 May-15 Sep 1972

Corporate Author:

SPERRY RAND RESEARCH CENTER SUDBURY MA

Personal Author(s):

• Cronson, Harry M.
• Mitchell, Peter G.

Report Date:

1972-12-01

Pagination or Media Count:

47.0

Abstract:

The report describes investigations and modifications, both in hardware and software, to improve the accuracy of an AFAL time domain metrology system for measuring the constitutive properties of materials. Experiments revealed that the systematic error observed in the data was due to small mismatches in the connectors adjacent to the material sample. The reflections and the systematic error were reduced by improving the design of one of the connectors and replacing the other delay line and connector by precision air line. Software procedures to further remove the effects of line mismatches from the data were also developed.

Descriptors:

• *MEASURING INSTRUMENTS
• COMPUTER PROGRAMS
• PERMEABILITY
• CALIBRATION
• MICROWAVE FREQUENCY
• SIGNAL TO NOISE RATIO
• TEST EQUIPMENT

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE