查询词典 radio frequency

It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951; it must be known to any kind of radio astronomer in the universe.

这个频率是空间氢原子释放的自然频率，是在 1951 年被人类发现的。这个频率是宇宙中任何射电天文学家都应该熟悉的。

Aircraft navigation system, one or more ground navigation station with the provisions of the frequency of launching radio beacon signals (such as wave, audio wave modulation or code), aircraft flight navigation equipment according to the received beacon signal measured or calculated aircraft Solutions relative to the navigation ...

飞机导航系统中，一个或几个地面导航台用规定的频率发射无线电信标信号（等幅波、音频调制波或代码），飞机机上导航设备根据收到的信标信号测出或解算出飞机相对于导航。。。

Aircraft navigation system, one or more ground navigation station with the provisions of the frequency of launching radio beacon signal (amplitude wave, audio wave modulation or code), aircraft flight navigation equipment according to the received beacon signal measured or calculated aircraft Solutions relative to the navigation ...

飞机导航系统中，一个或几个地面导航台用规定的频率发射无线电信标信号（等幅波、音频调制波或代码），飞机机上导航设备根据收到的信标信号测出或解算出飞机相对于导航。。。

The simulation results are given that, the beacon identification function and the direction finding of the radio compass cannot be influenced by DPSK modulation, and the synchronization between DPSK and the audio frequency signal is an effective approach to overcome the AM's influences on the DPSK demodulation.

仿真结果表明，DPSK不会对现有机载无线电罗盘的基本功能产生影响，利用差分数据信号与音频信号进行同步的方法进行"北斗二"差分数据传播可以有效克服AM调制对DPSK解调的影响。

Located in the radio spectrum on the frequency of two specific parts of the boundaries between.

无线电频谱上位于两个特定的频率界限之间的部分。

Radio engineers already had a fairly good understanding of how the sunspot cycle affected lower frequency transmissions, especially at frequencies below 30 MHz.

无线电工程师已经有相当好理解对怎样黑点周期影响了更低的频率传输，特别是以频率在30 兆赫以下。

Some of the proposed new radio architectures [3] move the need for a tunable frequency synthesizer from RF to IF, but today's superheterodyne architecture always needs a tunable RF synthesizer.

一些新提出的无线电系统架构[3]将使用可调谐的频率合成器的地方由射频变为中频，但目前的超外差式的结构仍然一直使用可调谐的射频合成器。

In radio communications, a frequency in a superheterodyne receiver or transmitter system that enables easier filtering, distribution, modulation, and demodulation of a signal

在无线电通信技术中，超外差接收机或发送机系统中使用的一种频率，能够方便地对信号进行滤波、分配、调制和解调。

Product features: 1, automatic satellite system power automatically begin searching and tracking satellites; 2, Express to capture the use of WRS algorithm for finding stars at Express looking for about 15 seconds to track satellites; 3, receive real-time tracking of satellite signals, high-speed DVB identification code in order to achieve continuous flow of radio and television programs to watch; 4, automatic identification in the frequency and be able to accurately identify the location on the target satellite; 5, scanning electron velocity EBF sweep mode to ensure that the system 100 times per second tracking sweep speed, so that the antenna system to ensure that the system at all under any uninterrupted for watching satellite television programs and allowing the system to greatly increase the service life; 6, self-diagnosis can be their own fault diagnostic equipment, including communication links, sensors, drives, etc..

产品功能：1，自动寻星系统通电后自动开始搜索跟踪卫星；2，快速捕捉利用WRS寻星算法在15 秒左右快速寻找到跟踪卫星；3，接收信号实时跟踪卫星，高速识别DVB 码流以实现连续收看广播电视节目；4，自动识别能够在频率和位置上准确的辨别目标卫星；5，电子波速扫描 EBF扫模式保证了系统每秒100次的跟踪扫速度，使天线系统保证系统在任何条下都能不间断的收看卫星电视节目且使系统的使用寿命大大增加；6，自我诊断可以自行诊断设备故障，包括通信链路、传感器、驱动装置等。

Independent of the architecture used, a frequency synthesizer is an essential part of any radio system.

不管使用什么架构，频率合成器是所有无线电系统的基本部件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。