Modulation Measurement Study.
Abstract
ILS Modulation Meters, with a high degree of measurement accuracy, incorporated a pulse modulation calibration technique which had not previously been used to establish amplitude modulation levels. A source of sine wave modulated signals with sufficiently accurate modulation levels was not available for verification of the accuracy of the modulation meters. This study included development of such a source and the conduct of verification testing and evaluation, which demonstrated the feasibility of the pulse calibration technique to obtain the desired accuracy. This study also included modification of an ILS Modulation Meter for application to VOR modulation measurements and the development of equipment specifications covering the ILS and VOR Modulation Meters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA006266
Entities
People
- August M. Schmeling