Artificial hail-prevention operation commanding method based on dual-polarization weather radar
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A weather radar and dual polarization technology is applied in the field of artificial hail prevention operation command based on dual polarization weather radar.
Inactive Publication Date: 2017-08-04
新疆维吾尔自治区人工影响天气办公室
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[0004] The present invention provides an artificial hail suppression operation command method based on dual-polarization weather radar, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problem that the existing hail suppression operation method cannot quickly identify hail clouds, and accurate positioning is easy to cause Problems with hail suppression jobs failing
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Embodiment 1
[0027] Embodiment 1: as attached figure 1 , 2 , Shown in 3, a kind of artificial hail suppression operation command method based on dual polarization weather radar, comprises the following steps:
[0028] The first step, data entry and preprocessing, select the horizontal polarization reflectivity factor Z H , Differential reflectivity factor Z DR , difference propagation phase shift K DP , zero-lag cross-correlation coefficient ρ of horizontally polarized and vertically polarized echo power HV And the ambient temperature T is the judgment parameter, and the Z detected by the polarization radar is recorded in real time. H ,Z DR 、K DP , ρ HV and the parameter data of T, use the polarization parameter to preprocess the attenuation correction of all parameters, and then enter the second step;
[0029] The second step, data quality control, performs noise removal, filtering and smoothing processing on the input parameter data, and then enters the third step;
[0030] The ...
Embodiment 2
[0045] Embodiment 2: as figure 1 , Table 1, Table 2, Table 3, a kind of above-mentioned artificial hail suppression operation command method based on dual polarization weather radar, choose three input parameters Z H , ZD R , K DP To identify two phases of heavy rain (Rain) and hail (Hail), including the following steps:
[0046] The first step, data entry and preprocessing, suppose Z H =47dBZ,Z DR =1.2dB, K DP =2°*km-1, the weight factors of the three input parameters are equal, and the membership function parameters are set as shown in Table 1:
[0047] The second step: the process of processing the input parameters using the fuzzy logic element method is as follows:
[0048] Fuzzification: the result P after member function fuzzification ij As shown in table 2;
[0049] (2) The results of rule judgment are shown in Table 3;
[0051] (4) Defuzzification, by C=Rs 0 , get j=0, get the phase state as ...
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Abstract
The invention relates to the technical field of weather modification, and discloses an artificial hail-prevention operation commanding method based on a dual-polarization weather radar. The method comprises the following steps: 1, carrying out the data recording and preprocessing; 2, carrying out the data quality control; 3, recognizing the phase of hydrometeor through employing a fuzzy logic element method; 4, judging a strategy; 5, formulating and publishing the hail prevention operation information. The method employs the fuzzy logic element method for the recognition of the phase of the hydrometeor, gives out an optimal moment for artificial hail prevention according to a discrimination strategy, and converts the information into accurate information for the weather modification operation through combining with a shot point. Meanwhile, the sound-light alarm is given in needs, thereby preventing the working moment from being missed. A hail-prevention operation commanding method is formed based on the X-band dual-polarization radar, and is enabled to carry out the business operation. The system is simple and convenient to operate, is visual and efficient, and greatly improves the artificial hail-prevention operation commanding capability and effect.
Description
technical field [0001] The invention relates to the technical field of artificial weather modification, and relates to an artificial hail prevention operation command method based on a dual-polarization weather radar. Background technique [0002] At present, the artificial hail suppression operation technology mainly relies on various weather radars to identify hail clouds, and directs ground anti-aircraft guns and rockets to carry out hail suppression operations. The principle of artificial hail suppression is mainly to use anti-aircraft guns, rockets and other operating tools to send silver iodide as artificial ice core into the appropriate part of the hail cloud to form artificial hail embryos, which compete with natural hail embryos for the limited supercooled water in the cloud, thereby inhibiting Formation of larger hailstones. Therefore, the key to artificial hail suppression is to find out the timing and location of the graupel particles formed as hail embryos in t...
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