Accession Number:

ADP002208

Title:

Errors in Lightning direction Finding by Airborne Crossed Loops

Descriptive Note:

Corporate Author:

PARKER (LEE W) INC CONCORD MA

Personal Author(s):

• Parker, Lee W.

Report Date:

1983-01-01

Pagination or Media Count:

16.0

Abstract:

Analytical and computer approaches are presented for predicting the site errors of airborne crossed loops used for lightning direction-finding. This type of azimuth error is caused by distortion of the incident field due to induced skin currents. Computer code results are presented for a T-39 and a C- 130 aircraft used in flight-testing a commercial crossed-loop system. Another type of bearing error, caused by non-vertical lightning channels, is analyzed for the case where both detector and lightning source are above a conducting ground plane. Also discussed is the 180-degree ambiguity and its resolution by an electric field antenna.

Descriptors:

• *DIRECTION FINDING
• *LIGHTNING
• AIRBORNE
• AIRCRAFT
• CRUCIFORM CONFIGURATIONS
• DETECTION
• ERRORS
• LOOP ANTENNAS
• POSITION(LOCATION)
• SYMPOSIA

Subject Categories:

• Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE