查询词典 signal carrier

Based on analyzing the mathematic model of a permanent-magnet synchronous motor excited by carrier signal injection, a novel rotor position self-estimation method is investigated on the basis of rotor saliency-tracking technology.

在分析载波电压信号激励下永磁同步电机数学模型的基础上，研究了基于凸极跟踪转子位置的自测角方法。

Chromium ore samples were fused by alkali and then leached out by hydrochloric acid. After the analytical lines of the elements were selected, the conditions of sample uptake, carrier gas flow, cooling gas flow and RF power were optimized with the system of SeaSpray nebulizer and cyclone spray chamber, based on the principle of best signal stability. The determination of chromium, aluminum, iron, magnesium and silicon in chromium ores was fulfilled.

铬矿石样品经碱熔融和盐酸浸取后，选用SeaSpray雾化器和旋流雾室，选定了待测元素的分析线，以信号的稳定性为原则，优化了样品提升量、载气流量、冷却气流量和入射功率，实现了电感耦合等离子体原子发射光谱法对铬矿石中铬、铝、铁、镁和硅等主量成分的测定。

A method has been developed to collect variable carrier frequency bandpass signal on the wideband condition.

这些方法以高效的结构实现了采集数据与带宽的匹配问题，有效地降低了数据率。

At first,the performance of different discriminators in code and carrier loop are compared based on anlyzing the principle of GPS tracking.Then the tracking effects with different loop patameters are simulated and compared.At last,a couple of discriminators are selected and proper loop parameters are designed to track actual GPS intermediate frequency signal,and the tracking results validate the design.

在分析GPS跟踪原理的基础上，对比码环与载波环不同鉴相器的性能，然后在不同环路参数下对跟踪效果进行了仿真比较，最后选择一组鉴相器并设计合适的环路参数，对实际采集的GPS中频信号进行跟踪，跟踪结果验证了设计环路的有效性。

Since the float-zone silicon has lower contaminations and longer minority carrier lifetime than those in Czochralski Silicon and other semiconductor material, it has potential advantages to fabricate phototransistor on high-purity FZ silicon substrate to achieve a high gain at ultra low signal levels.

区熔单晶硅与直拉单晶硅以及其他半导体材料相比杂质含量少，少子寿命长，所以以区熔单晶硅为衬底制作的光晶体管在弱的光信号下仍然有高的增益，适宜于弱光探测。

The model considers as many factors as possible, including nonuniform distribution of photon intensity and carrier density along active region, gain spectral dispersion, spontaneous emission spectrum and facet reflectivity, and is applicable under the condition that the pulse width of injecting signal is wider than 10 picoseconds. It provides a convenient and effective theoretical platform for SOA dynamic characteristic study.

该模型考虑光子密度和载流子浓度沿有源区的非均匀分布、增益谱色散性、自发辐射噪声谱和端面反射率，适用于脉冲宽度高于10ps的信号输入的情况，为后续研究SOA动态特性提供了方便而有效的理论验证平台。

In digital communication, a transmitted carrier signal that consists of the12 single sidebands being sent over the transmission circuit.

在数据通信中，一种传输载波信号，由传输电路上发送的12个单边频带组成。

An amplitude modulating circuit that suppresses the carrier signal, producing an output consisting only of upper and lower sidebands.

一种抑制载波信号的振幅调制电路，产生的输出仅包含上边带和下边带。

Nbs; An amplitude modulating circuit that suppresses the carrier signal, producing an output consisting only of upper and lower sidebands.

一种抑制载波信号的振幅调制电路，产生的输出仅包含上边带和下边带。

An alternative method is to transmit the combined digital signal from the parallel channels by frequency or phase modulation of common carrier.

另一种方法是对公共载波调频或调相的方法发送并列信道的组合数字信号。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。