In mfi , the thesis uses the bottom reflection phase shift as the cost function and the modal wave number as input data . also , it makes errors analysis by the statistical distribution between data errors and parameter errors . there are some new ideas in it 论文在使用匹配场反演方法反演海底参数中以海底反射相移曲线作为代价函数,模式波数作为输入数据,同时利用统计分布进行误差分析,具有一定的新意。
However , video communication can tolerate some kind of data error or loss and different parts of video bitstream have unequal error sensitivities . so we need new error control methods designed especially for video communicaton 同时视频数据能够容忍一定的误码和丢失,并不需要绝对的无差错传输,而且视频数据流的不同部分对错误的敏感度也不同,因此有必要也有可能根据视频通信的特点研究新的差错控制方法。
The result of the influence of the mismatch of the water parameters for the inverted bottom sound speed and density and the relation of the statistical distribution between data errors and inverted parameters errors are studied by this scheme 在水体声速已知的条件下,论文利用该方法对水体声速剖面参数失配对反演的海底声速和密度的影响结果,以及水体声速误差分布与反演的海底声速和密度误差分布的关系进行了研究。
The subject of this paper is a discussion and analysis for the relationship of different oceanic environmental parameters influencing each other , and relationship of the statistical distribution between data errors and inverted parameters errors by numerical simulation in a representative oceanic environment 论文通过数值模拟方法,讨论和分析了典型海洋环境下,不同的环境参数在反演中相互影响的关系以及数据误差与反演参数误差之间统计分布的关系等问题。
2 . the mode of launching data is buffering - blustering , which require the digital coding technology must work in sotdma . this article proposes the software programme of the data error - checkout technique crc - 16 to achieve the communication quality . 3 2 、由于系统发射数据是用缓存?突发法,因此对任何一个用户而言发射都是不连续的,这就表明数字编码技术必须配合sotdma技术一起完成通信,因此本文对数据编码? ?循环冗余校验编码也给出了相应的软件实现办法及程序。
In the second part , we adopt a few typical error analysis methods , primarily including the relativity analysis and the regression analysis , to analyses the relative error and absolute error of the time error , spatial data error and statistic data error of the raw input data in the model . then , we take each influence factors in the model into the relativity analysis and the regression analysis . finally , we synthesize the results of the above error analysis to figure out the theoretic accuracy of that model as 87 % 第二部分主要是采用几种典型的误差分析方法,主要包括相关性分析和回归分析,对模型的原始输入数据的时间误差、空间误差和统计数据误差进行了相对误差和绝对误差的分析,然后又对模型中各影响因子进行了相关分析和回归分析,最后综合以上误差分析的结果得出该模型的理论精度为87 。
Methods to estimate bias error , dispersion and first round hit probability for artillery system are shown . ( 2 ) error - sources of position survey preparation , target position decision , ballistic preparation , meteorology preparation , models , technical preparation and the rest for deliberate preparation as well as their effects on initial firing data errors are discussed in details ( 2 )较详细地讨论了精密法决定射击开始诸元中,测地准备、决定目标位置、弹道准备、气象准备、模型、技术准备、其它未测定或未修正误差等误差源等及其对射击开始诸元的影响。