All of our products have alarge market in guang zhou , shen zhen , hui zhou , nan chang , he wei and ha er bin etc , totally over 10 big cities in our country , our enterprise has developed very fast in only a few years . in 1996 , our cooked food , as the representative for hu nan easy food , was honored to be displayed on the “ 96 ‘ national notable 、 high - quality 、 special 、 new product ” expo . , our products wined the honor of “ notable brand product in china market ” in 1998 , and “ 99 ‘ highest market possession ratio in hu nan market ” 、 “ preferred commodity ” 、 “ light industrial prokuct quality assured ” in 1999 . chose through public appraisal , our enterpise was named as “ aaa grade enterprise ” 、 “ enterprise trusted by customers ” and continued to hold a title as “ advanced private venture enterpwise ” & “ 500 top - ranking prvate venturd enterprise in hu nan ” for 5 rears . we won “ the hunan famous trademark prize ” and “ hunan famous product prize ” in 2003 . our company has successfully achieved iso9001 ( 2000 ) international standard eligibility certification . the owner jiansimao has been selected “ hu nan celebrity ” and his name has been written into 《 hu nan celebrity blue bood 》 and 《 china celebrity blue book 》 in early 2001 “简四毛”牌系列食品远销广东、深圳、惠州、江西南昌、安徽合肥、哈尔滨等全国十多个大中城市， 96年代表湖南休闲食品参加“ 96全国名、优、特、新产品博览会” ， 98年获中国市场知名商标商品； 99年获“ 99湖南市场占有率最高品牌” 、 “ 99湖南消费者购买首选品牌” ，产品质量得到“中国轻工产品质量管理体系认证” ，企业被评为“中国企业形象aaa级单位” ，通过iso9001 、 2000质量管理体系认证，连续5年来被长沙市授予“先进私营企业” 、 “湖南省十大行业500强私营企业” ， 2003年荣获“湖南省著名商标”和“湖南省名牌产品”称号，被省、市消费者委员会、省市质量技术监督局连年评为“消费者信得过单位” 、 “质量信得过单位” ，公司业主简四毛已入编《湖南名人志》并确立为“湖南当代名人” ， 2001年元月又被收录入编《中国名人志》 。
In the first part of paper , we introduce the appliance of doppler weather radar in meteorological work in the near future , and simply enumerate all kinds of adjoint methods to retrieve data of radar . in the second part of paper , we choice some methods that are usually used domestically and overseas , compare excellence and flaw of the methods by using data of simulate wind field , analyze synthetically the precision of simulate result , the length of retrieval time and the structure of data distributing , lastly decide to regard ameliorated quasi - 4d adjoint method as retrieval technology in the paper . in the third part of paper , we retrieve the data of single doppler weather radar in hefei , anhui province , then calculate 3d wind field , streamline field , divergence , vorticity , helicity , moisture flux , divergence of moisture flux and potential vorticity from the result of retrieval 文中第一部分对近年来多普勒天气雷达在气象工作中的应用作了介绍，同时简单的罗列了反演雷达资料的各种变分方法；接下来在第二部分选取了几种国内外常用的反演方法，利用模拟的风场资料比较各种方法的优缺点，从模拟结果的精度、反演时间的长短、资料的分布结构上综合分析，最后决定将已做改进的准四维变分分析方法作为本文的反演工具；第三部分就是反演安徽合肥多普勒天气雷达资料，然后由反演得出的风场计算了各个时间各个层次的三维风速、流场、散度、涡度、螺旋度、水汽通量、水汽通量散度和位涡。
