Accession Number:

ADA242840

Title:

Analysis of the Terminal Doppler Weather Radar Algorithm for Detecting Rotation Associated with Microbursts

Descriptive Note:

Project rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1991-10-25

Pagination or Media Count:

71.0

Abstract:

Rotating winds aloft occurring with downdrafts often are associated with microbursts, which are serious aviation hazards. The Terminal Doppler Weather Radar system detects microbursts and warns pilots of windshear events, partly by its use of rotation as precursors. The role of the rotation region detection algorithm in this system is described, and the improvements to it are analyzed using measured data and simulated rotation regions. The final results show a substantial overall decrease in the number of false detections generated by the algorithm due to adjustment of thresholds and additional logic, while still retaining a good probability of microburst rotation region detection 84 percent. Ideas for future enhancement are explored through techniques such as discriminant analysis and environmental wind filtering.

Subject Categories:

  • Meteorology
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE