查询词典 Loran

In order to ensure the precision and reliability, this paper designs the GPS/Loran C/SINS/AHRS integrated system. In this integrated system, the self-adaptive federated Kalman filter is introduced to revise strap-down inertial navigation system; the heading angle attitude and heading reference system is used to ensure the convergence of heading angle; and the coordination transformation for Loran C is applied to eliminate the constant error of Loran C.

针对导航精度及可靠性，设计了GPS/罗兰C/SINS/AHRS组合导航系统，该组合导航采用了自适应联邦卡尔曼滤波的方法，通过闭环形式校正SINS，并用姿态航向参考系统代替捷联惯性导航系统输出的航向角以保证航向角的收敛，同时对罗兰C的测量值进行坐标变换以消除由于坐标系不同而带来的常值误差。

The FIR digital filter designed with Remez exchange algorithm is applied in the processing of loran-C signal.

用Remez交换算法设计优化的FIR数字滤波器并应用于罗兰C信号处理中，然后结合这两种方法，进行去噪仿真。

Loran A station Cheng Shan off air from 010800 hours local time to 050800 hours local time.

成山劳兰 A 台从当地时间 1 日 0800 时到 5 日 0800 时关闭，恢复后 1 小时取消该信息。

In a someone certainly (There's some uncertainty in the) economy, but in a loran you get (the long run, you've get to) be careful about the economy.

经济中有不确定因素。但长期看来，你要对自己经济有信心。

KEY WORDS: Loran C, phase coding

本文介绍了罗兰C导航定位系统相位编码技术。

The location determination is effected using any number of commonly available techniques, such as direct entry, infrared sensors and active badges for relative positioning, as well as the conventional absolute positioning devices such as LORAN and GPS.

该位置的确定通过使用任意数量的常规可用技术，如直接入口，红外传感器和用于相对定位的有源标记器以及如LORAN和GPS常用绝对定位装置实现的。

The simulation results show that the denoising effects of the three methods are all superior to that o f Fourier transform, and the influence of colored noise can be eliminated effectively by bispectrum methods. That is very i mportant for reconstructing LoranˉC signal under the condition of small signalˉtoˉnoise ratio, and also lays the fou ndation for digital LoranˉC signal processing.

仿真分析结果表明，三种方法的去噪效果都优于传统的傅氏变换法，且双谱估计能够有效地去除色噪声的影响，对于小信噪比条件下的罗兰C信号的提取和恢复具有重要意义，也为复杂环境下对罗兰C信号的数字处理奠定了良好的基础。

Rather than rely on self-control in situations where temptations arise, the best way to stay in control is to avoid those situations altogether, says psychologist and lead researcher Loran Nordgren, PhD, of Northwestern University's Kellogg School of Management.

心理学家以及首席研究员，西北大学Kellogg管理学院的Loran Nordgren博士指出，保持自制力最好的办法就是远离那些诱惑，而不是面对诱惑考验自制力。

A novel signal processing technique using the Eigenvector algorithm for estimating sky wave delays in Loran-C receiver has been presented in this paper.

提出了一种基于特征向量算法来估计Loran-C接收机天波延迟的信号处理新技术，为设计具有自适应调节最佳采样点的Loran-C接收机打下良好的基础。

The paper will show that, if appropriate time information are added into the signals over the Loran-C data channel (studied in the first part of the paper) or in which the current multi-chains signals can be skillfully dealt with(studied in the second part of the paper), the independence of Loran-C for precision timing can be perfected, as well as the precision of timing signals and the automatization level of UTC synchronization can be improved, thereby the Loran-C can be acceptant and employed widely.

本文通过研究认为，在罗兰C信道上增加合适的时间信息或利用多链罗兰C信息，能够完善罗兰C高精度授时的自主性，提高定时信号的精确度和用户定时的自动化水平，从而提升该系统的可利用度和可接受程度。作者所做工作及主要成果如下

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。