排序方式： 共有13条查询结果，搜索用时 15 毫秒
1.
本文提出了低纬子午环（LLMC）配备CCD后的CCD芯片跟踪运动的控制方案,讨论了CCD芯片的预置位置及跟踪扫描速度的计算问题,并介绍了实现这一控制方案的系统硬件构成及软件设计方法。 相似文献
2.
本文提出了低纬子午环 (LLMC)配备CCD后的CCD芯片跟踪运动的控制方案 ,讨论了CCD芯片的预置位置及跟踪扫描速度的计算问题 ,并介绍了实现这一控制方案的系统硬件构成及软件设计方法。 相似文献
3.
A heavy rainfall case related to Mesoscale Convective Systems (MCSs) over
the Korean Peninsula was selected to investigate the impact of radar data
assimilation on a heavy rainfall forecast. The Weather Research and
Forecasting (WRF) three-dimensional variational (3DVAR) data assimilation
system with tuning of the length scale of the background error covariance
and observation error parameters was used to assimilate radar radial
velocity and reflectivity data. The radar data used in the assimilation
experiments were preprocessed using quality-control procedures and
interpolated/thinned into Cartesian coordinates by the SPRINT/CEDRIC
packages. Sensitivity experiments were carried out in order to determine the
optimal values of the assimilation window length and the update frequency
used for the rapid update cycle and incremental analysis update experiments.
The assimilation of radar data has a positive influence on the heavy
rainfall forecast. Quantitative features of the heavy rainfall case, such as
the maximum rainfall amount and Root Mean Squared Differences (RMSDs) of
zonal/meridional wind components, were improved by tuning of the length
scale and observation error parameters. Qualitative features of the case,
such as the maximum rainfall position and time series of hourly rainfall,
were enhanced by an incremental analysis update technique. The positive
effects of the radar data assimilation and the tuning of the length scale
and observation error parameters were clearly shown by the 3DVAR increment. 相似文献
4.
本文针对低纬子午环(LLMC)高度角控制系统的问题提出了一种解决的方案.同时介绍了该系统的硬件结构及其相关控制程序. 相似文献
5.
本文针对低纬子午环原方位传动系统中存在的振动问题,提出了新的解决方案,即采用振动较小的电机替代原电机。为此,我们对原单片机控制系统的硬件进行了扩展与修改,重新设计了单片机内的ASM控制程序。文中介绍了修改后的系统硬件结构与ASM控制程序。 相似文献
6.
对地质灾害防治工程的勘查、设计工作流程进行了系统的描述，此控制程度能有效地确保地质灾害防治工程勘查、设计全过程的质量控制处于受控状态，以实现地质灾害防治工程的勘查、设计各阶段的实物工作满足国家规范及业主的规定。 相似文献
7.
分析了TAPI协议的概念以及使用它编写电话控制程序的完整步骤.主要介绍了TAPI协议接口的分类和TAPI电话应用的实现,对进一步研究TAPI在电话应用系统中的开发起到了一定的作用. 相似文献
8.
9.
10.