Because mechanism modeling is very complex and the data for identification modeling ca n ' t often obtain easily , the writer present a thought to establish the mathematical model of transient temperature field of iron bodies . the thought is that using mechanism modeling to set up temperature prediction model for surface of iron bodies and using identification modeling to calculate temperature field of iron bodies 本文针对机理建模的复杂性和辨识建模实验数据获得的困难性，提出了使用机理建模和辨识建模相结合的办法建立加热炉钢坯温度场数学模型思想，即，利用辨识建模的方法(使用动态bp网络建模)建立钢坯表面温度预报模型，在此基础之上使用机理建模的方法(利用有限差分法建模方法)建立温度场的预报模型。
To detect target signal with strong sea clutter , to increase the clutter visibility of sea radar and enable higher resolution and reliable monitoring performance of sea radar , three kinds of key clutter modeling technology for sea radar are studied in detail , which are clutter scattering mechanism modeling , clutter statistics modeling and clutter nonlinear modeling on basis of elaborating sea clutter characteristics 摘要为了能在强烈的海杂波背景下检测到目标信号，从而提高海面雷达的杂波可见度，使海面雷达具有更高的分辨率和可靠的监测性能，在精确的描述海杂波特性的基础上，详细研究了杂波散射机理建模、杂波统计建模和杂波非线性建模3种海面雷达杂波建模关键技术。
