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【速搜问答】定标频率是什么

问答 admin 9个月前 (04-10) 152次浏览 已收录 0个评论

汉英对照:
Chinese-English Translation:

定标频率是指信标台的发射频率。通常都选择在 50 Hz,400 Hz,1 kHz,10 kHz,100 kHz,上述频率均属于低频电压标准的工作频率范围。定标频率区分不同的地区,主要用于定位。

Calibration frequency refers to the transmitting frequency of beacon station. They are usually selected at 50 Hz, 400 Hz, 1 kHz, 10 kHz and 100 kHz, all of which belong to the working frequency range of low frequency voltage standard. Calibration frequency distinguishes different regions and is mainly used for positioning.

定标频率是指信标台的发射频率。定标频率通常都选择在 50 Hz,400 Hz,1 kHz,10 kHz,100 kHz,上述频率均属于低频电压标准的工作频率范围。

Calibration frequency refers to the transmitting frequency of beacon station. Calibration frequencies are usually selected at 50 Hz, 400 Hz, 1 kHz, 10 kHz and 100 kHz, all of which belong to the working frequency range of low frequency voltage standard.

定标频率区分不同的地区,主要用于定位。

Calibration frequency distinguishes different regions and is mainly used for positioning.

定义

definition

信标台是利用无线电信标引导飞机着陆的机场地面的设施。此着陆系统由地面无线电信标台与机载接收设备组成。无线电信标台包括定向信标台;下滑信标台;指点信标台。

Beacon station is an airport ground facility that uses radio beacon to guide aircraft landing. The landing system consists of ground radio beacon and airborne receiving equipment. Radio beacon station includes directional beacon station, glide beacon station and pointing beacon station.

信标台发射连续无线电方向波和不同电台的识别信号,定标频率即信标台的发射频率,定标频率区分不同的地区。

The beacon station transmits the continuous radio directional wave and the identification signals of different radio stations. The calibration frequency is the transmission frequency of the beacon station. The calibration frequency distinguishes different regions.

实现这一切最关键的就是移动台,移动台是公用 GSM移动通信网中用户使用的设备,也是用户能够直接接触的整个 GSM 系统中的唯一设备。典型的移动台包括车载台、便携式移动台及手机。不同类型移动台的功率不同。

The key to achieve all this is the mobile station, which is not only the equipment used by users in the public GSM mobile communication network, but also the only equipment in the whole GSM system that users can directly contact. The typical mobile station includes vehicle station, portable mobile station and mobile phone. Different types of mobile stations have different power.

定标频率通常都选择在 50 Hz,400 Hz,1 kHz,10 kHz,100 kHz,上述频率均属于低频电压标准的工作频率范围。

Calibration frequencies are usually selected at 50 Hz, 400 Hz, 1 kHz, 10 kHz and 100 kHz, all of which belong to the working frequency range of low frequency voltage standard.

工作原理

working principle

(1)信标台在一个定标频率上连续地以恒定电平发射;

(1) The beacon continuously transmits at a constant level on a calibration frequency;

(2)移动台确定它必须测量哪个频率,这就需要向移动台发送一个要测量的频率表。

(2) The mobile station determines which frequency it must measure, which requires sending a frequency meter to the mobile station.

(3)因为定标频率必须以恒定功率发射,这样功率控制就只能作用于部分突发脉冲,而那些使用定标频率的突发脉冲必须以恒定功率发射。

(3) Because the calibration frequency must be transmitted at a constant power, the power control can only be applied to some burst pulses, and those burst pulses using the calibration frequency must be transmitted at a constant power.

为了进行有效的测量,应以尽可能快的速率更新测量数据。在全球移动通信系统中,最小报告速率是每秒一次,最大速率是每秒两次。

In order to make effective measurement, the measurement data should be updated as quickly as possible. In the global mobile communication system, the minimum reporting rate is once per second, and the maximum rate is twice per second.


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