排序方式: 共有5条查询结果,搜索用时 21 毫秒
1
1.
2.
SINS/GPS组合导航系统时序同步技术研究 总被引:1,自引:0,他引:1
一本文讨论的SINS/GPS组合导航系统时序同步技术是以GPS接收机输出的IPPS秒脉冲作为组合导航系统的参考时标,定时地修正SINS的基本任务时序。文中提出一种利用分频器自动调节技术对SINS基本任务时序发生器的分频器进行动态修正的方法。仿真实验结果表明,当ISNS频标相对于GPS接收机出现漂移或其它不稳定性情况时,该方法也能使SINS的基本时序与GPS接收机保持精确同步。 相似文献
3.
4.
Chunhua Ren Huaimin Wang Duo Mao Xiaoli Zhang Qianqi Fengzhao Yang Shi Dr. Dan Ding Prof. Deling Kong Dr. Ling Wang Prof. Zhimou Yang 《Angewandte Chemie (International ed. in English)》2015,54(16):4823-4827
We demonstrate that the incorporation of one or two amino acids of phenylalanine (F) or 4‐fluoro phenylalanine (fF) will greatly lower the background fluorescence intensities of conventional quenched probes with quenchers. This enhanced quenching effect was due to the synergetic effect of the aggregation caused quenching and the presence of a quencher. Such strategy will not greatly affect the enzyme recognition properties to the probes. We also demonstrated that our self‐assembled nanoprobe with the enhanced quenching effect showed a better performance in cells for the detection of cell apoptosis than the unassembled probes. Our study demonstrates that using molecular self‐assembly can optimize and improve the performance of molecular probes and it provides a simple but very useful strategy to boost the signal‐to‐noise ratios of fluorescence probes. 相似文献
5.
The concept of a partial geometric difference set (or -difference set) was introduced by Olmez in 2014. Recently, Nowak, Olmez and Song introduced the notion of a partial geometric difference family, which generalizes both the classical difference family and the partial geometric difference set. It was shown that partial geometric difference sets and partial difference families give rise to partial geometric designs. In this paper, a number of new infinite families of partial geometric difference sets and partial geometric difference families are constructed. From these partial geometric difference sets and difference families, we generate a list of infinite families of partial geometric designs. 相似文献
1