The hail detecting algorithm based and realized on SWAN system was introduced. Firstly, WSR-88D hail algorithm theory was introduced, put forward the method that using vertical height threshold to reform in SWAN, by contrasting with product data of PUP, verified the correctness of the algorithm. Secondly, aiming at the oversize of hail in work, with the analysis of hail detecting cases, revised by optimal power function fitting. Analyzed the false-alarm coursing by super-refraction which is common in work, by setting the reflectivity vertical gradient threshold around storm center more than 3, can wipe off a great amount of super-refraction. For the hail storms which are fallen into threshold, we can use the threshold of two dimension storm number more than 7 to distinguish, reduce false position rate, and obtain ideal effect. In the end, provide the transaction flow diagram of SWAN hail detecting algorithm.
WU Linlin
,
LIU Liping
,
ZHENG Yuanyuan
,
AN Jingjing
,
JI Lei
. Study of Hail Detection Algorithm Based on SWAN System[J]. Plateau Meteorology, 2014
, 33(3)
: 823
-831
.
DOI: 10.7522/j.issn.1000-0534.2012.00037
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