Accession Number:

AD0885735

Title:

Progress Report for January 1971 through March 1971 and for Contract Year September 1970 to August 1971.

Descriptive Note:

Technical rept. no. 24,

Corporate Author:

ILLINOIS UNIV AT URBANA RADIO RESEARCH LAB

Personal Author(s):

• Wood, W.

Report Date:

1971-06-01

Pagination or Media Count:

46.0

Abstract:

This report deals with six separate research tasks 1 an interferometer type RDF system 2-32 MHz for intermediate and long range use 2 an investigation of a technique for predicting the effect of multi-mode propagation on the direction-of-arrival of radio waves 3 a method of correcting the diurnal deviation of the direction-of-arrival radio waves 4 a comparison of methods of computing the direction of arrival of radio waves 5 a method of measuring the vertical angle-of-arrival of radio waves using a CDAA 6 azimuthal measurement of the man-made and atmospheric noise levels. Author

Descriptors:

• *DIRECTION FINDING)
• (*RADIO COMPASSES
• (*ANTENNA ARRAYS
• PHASED ARRAYS)
• (*POSITION FINDING
• RADIO SIGNALS)
• RADIO INTERFEROMETERS
• IONOSPHERIC PROPAGATION
• DIURNAL VARIATIONS
• ANGLE OF ARRIVAL
• ATMOSPHERICS
• ACCURACY
• ERRORS
• VERY LOW FREQUENCY

Subject Categories:

• Electrical and Electronic Equipment
• Direction Finding
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE