查询词典 wireless beacon

The objectives of this study were to develop a wireless sensor network technologies for agrometeorological disaster early alarm system and processing system. In this study, the foehn with a high temperature and low humidity has been monitored. The wireless sensor acquisition module ZigBee has been used to monitor the climate conditions combined with a GPRS wireless transmission module to construct wireless disaster alarm sytem. Graphical programming computer software package LabVIEW 8.2 was used to develop the control and monitoring systems.

本论文研究目的旨在发展气象灾害预警及处理系统，以焚风灾害为研究对象，焚风为台湾农业气象灾害之ㄧ，每年发生次数频繁且不可预测，当焚风发生时，监控焚风产生的高温和低湿变化，透过ZigBee无线传输技术，可连结温湿度、光度及土壤含水率等感测器，并与GPRS模组结合，将资料即时传送至伺服平台，藉由LabVIEW程式监控环境变化，达到气象环境即时监测之目的。

The scarceness of wireless spectrum hampers the sustainable development of wireless communication services. Recently, the wireless communication community has realized that the static spectrum allocation method is the main cause of the shortage of wireless spectrum.

中文摘要无线频谱的紧缺是限制无线通信与服务应用持续发展的瓶颈，近年来，无线通信业界普遍认识到，静态的频谱分配方式是造成当前频谱资源日趋缺乏的一个主要原因。

Recently, of the wireless channel transform operations, especially in the future wireless transform system such as 3G, 4G and wireless LAN with the operation of image and video, because of the wireless channel characteres such as signal fading, multi-way reflection and so on, traditional coding methods become more and more unfitting.

在近来的无线信道传输业务中，特别是在将来的3G、4G以及无线局域网等无线信道传输系统中的图像乃至视频传输业务中，由于无线信道的信号衰落、多径反射等诸多特点，使得传统的编码方法越来越难以胜任。

The main products: Internet telephony, wireless access Desk, to wireless, public wireless, wireless internet, chargers, power adapters.

主要产品：网络电话、无线接入台、无线商话，无线公话，无线上网卡，充电器，电源适配器。

The designing idea and realization method of a wireless tachometer of the engine with the wireless transmission technique were discussed.The design of the hardware and software of the wireless tachometer system was provided,based on TX100/RX100 ASK wireless receiving and transmitting radio module, real time clock chip PCF8563,AT89C2051 microcomputer and four-bit serial segmentary LCD of EDM1190A.

提出了一种应用无线传输技术的发动机无线转速表的设计思路及实现方法，给出了基于TX100/RX100ASK无线射频收发模块组、实时时钟芯片PCF8563、AT89C2051单片机和4位串行段式液晶显示器EDM1190A的无线转速表系统的硬件和软件设计。

In this dissertation, the characteristics of the OFDM wireless channel are modeled and simulated, the work as follow has been completed.(1) Based on studying the theory of the spread of wireless channel, the characteristics of wireless channel are analyzed, the models of a variety of fading channel are established, and the model of the wireless channel with tap delay line and Jakes channel model are designed.

本文主要是对OFDM系统无线信道特性进行建模与仿真，完成了以下工作：(1)在研究了无线信道传播理论基础上，分析了无线信道传播特性，建立了各种衰落信道的结构模型，设计了无线信道抽头延迟线模型和Jakes仿真模型。

This instrument combines wireless RF module with singlechip. It can realize measurement, preservation and distant wireless communication all-in-one. It not only can measure and show snap cap's resistance quantity intuitively, but also can transmit data to monitoring center's PC by wireless in time. It makes data vision and data recognition. It can deal with the resistance's data the is measured in blasting scene by wireless. It provides more safety control and convenience for the employees in scene operation.

该设备将射频无线模块与单片机系统相结合，实现了数据测试、保存、远距离传送一体化，不仅能够快速直观的测试并显示出雷管的阻值，而且能及时地将测试数据以无线的方式传送给监控中心的PC机，由PC机进行数据的显示和识别，成功地实现了爆破现场雷管电阻测试数据的无线处理，为现场作业提供了更为可靠的安全保障，并极大地便利了工作人员的现场作业。

RF modules covering GSM, CDMA, TD-SCDMA, WCDMA, WLAN and Wimax wireless communications systems, active modules include power and frequency of the linear power amplifier, transceiver components, modules and integration of selected frequency modules, Passive radio frequency modules, including various types of filters, diplexers, a road, splitters and couplers; wireless network optimization campaign整机including PHS, GSM, CDMA, TD-SCDMA and WCDMA straight-machine, RF Rafah Yuan and indoor distribution systems, digital television, including digital TV mobile wireless transceiver modules, wireless transponders, digital mobile TV repeater, and so on.

射频模块涵盖了GSM、CDMA、TD-SCDMA、WCDMA、WLAN和Wimax等无线通信系统，有源模块包括各种功率和频率的线性功率放大器、收发组件、选频模块和一体化模块等，无源射频模块包括各类滤波器、双工器、合路器、功分器和耦合器等；无线网络优化系列整机包括PHS、GSM、CDMA、TD-SCDMA和WCDMA直放机、射频拉远和室内分布系统等；数字移动电视包括数字电视无线收发模块、无线转发器、数字移动电视直放站等。

Secondly this paper analyzes the research present conditions and development trend of transmitter and miniature wireless in missile at home and abroad thoroughly ,then designs the PCM-CDMA-QPSK system of integrated miniature wireless beacon which based on the technology of CDMA and DUC.

其次，在深入分析和比较国内外弹载发射设备和无线信标技术研究现状的基础上，针对多目标测量的需求，基于码分多址和直接上变频技术原理，设计了PCM-CDMA-QPSK体制的微小型无线信标系统总体，完成了无线信标系统中基带扩频电路的调试，结果表明，基于码分多址的多信标测量方法是可行性，所设计的系统可靠有效。

Line L4: Abeam abeam Maji Shan No.2 buoy （30°37′.30 N/122°30′.53E）.5.Line C1: the connection line between Xiaocaihua Light beacon and the west end of Zhoushan Dao（30°10′.0N/121°56′.0E）.6.Line C2: the connection line between Xiaocaihua Light beacon and the north end of Jintang Dao（30°05′.2N/121°52′.4E）.

南下船舶或设施拟通过西堠门、桃夭门大桥通航孔时，应当在抵C1报告线30分钟之前，向VTS中心报告船舶动态、水面以上最大高度和拟通过的通航孔大桥名称。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。