Divergence Detection in Wind Fields Estimated by an Airport Surveillance Radar

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Abstract:

A technique is assessed for automatic detection of hazardous divergence in velocity fields estimated by an Airport Surveillance Radar ASR. A least-squares approach was evaluated to radial divergence estimation through a performance analysis based on simulated data. This approach is compared to an existing decision-based radial shear finding method used for the Terminal Doppler Weather Radar TDWR. Empirical results derived by the application of the two techniques to data collected at ASR testbeds in Huntsville, Alabama and in Kansas City, Missouri are presented. Results indicate that a simple, least- squares divergence estimator combined with time association logic to increase temporal continuity of algorithm output is an equally effective means of detecting divergent wind shear in velocity fields estimated from ASR signals. RH

Author(s):
Noyes, T. A.
Author Organization(s):
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Descriptive Note:
Project rept.
Supplementary Note:
Original contains color plates: All DTIC and NTIS reproductions will be inblack and white.
Pagination:
0040

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ATC-172, DOT/FAA/NR-90/2
Monitor Series:
90/2, DOT
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.4.1_Secure Information Exchange; JCA_1.2.5_Lessons Learned; JCA_6.4_Information Assurance; JCA_5.2.3_Share Knowledge and Situational Awareness; JCA_5.2_Understand
Communities of Interest:
Engineered Resilient Systems
Descriptor(s):
*METEOROLOGICAL RADAR, *SEARCH RADAR, *WIND SHEAR, *AIRPORT RADAR SYSTEMS, *DOPPLER RADAR, DETECTION, VELOCITY, LOGIC, WIND, MISSOURI, TERMINAL FLIGHT FACILITIES, ALABAMA, TIME, LEAST SQUARES METHOD, AUTOMATIC, TEST BEDS, SIMULATION, OUTPUT, ALGORITHMS, PERFORMANCE TESTS
Field(s)/Group(s):
Meteorology, Active and Passive Radar Detection and Equipment
Report Date:
1990 Oct 15