| 1. | University of western australia uwa
西澳大学 |
| 2. | Achieving high speed uwa underwater acoustic communication with adaptive momc multimode orthogonal multicarrier technology
自适应多制式正交多载波高速水声通信技术研究 |
| 3. | A process that maps a record name to its physical location in the user work area ( uwa ) and notifies the dbcs ( database control system ) of the run unit ' s intention to use the database
将记录名映象到它在用户工作区中的物理位置，并将运行单元使用数据库的意向通知数据库控制系统（ dbcs ）的过程。 |
| 4. | A process that maps a record name to its physical location in the user work area ( uwa ) and notifies the dbcs ( database control system ) of the run unit ' s intention to use the database
将记录名映象到它在用户工作区中的物理位置,并将运行单元使用数据库的意向通知数据库控制系统( dbcs )的过程。 |
| 5. | Upon the request from some institutions that have the practical needs for uwa applications , the research is conducted to achieve the objective of developing a digital underwater acoustic voice communication system with longer working distance
本研究是根据很重要的应用单位对更远作用距离语音通信机的需要而选题的。 |
| 6. | 2 . a uwa communication system is designed , lake experiments are also conducted with several equalization methods being employed . one key of the techniques in underwater acoustic communication - synchronization technique is studied
在吉林松花湖作了水声通信试验，验证了上述算法的仿真结论，并对水声通信的关键技术之一的相关同步技术进行了分析研究。 |
| 7. | These demand to develop a more reliable remote control system . based on the analysis of underwater acoustic ( uwa ) channel , this thesis designs an auto - replying lduwarc system by means of spread spectrum technique
针对上述问题，本文在水声信道分析的基础上，设计了一种基于扩频技术的自主应答式远程声遥控系统，系统着重考虑了系统的调制方式和自主应答的方式。 |
| 8. | Since sound is the only effective information carrier for medium or long distance wireless communication in sea water , underwater acoustic ( uwa ) communication plays an important role in national defense and in the development of marine economy
由于声波是目前海中实现中、远距离无线通信唯一有效的信息载体，因此水声通信对于国防的保障和海洋经济的发展都有着极其深远的意义。 |
| 9. | In order to achieve high data rates on the severely band - limited underwater acoustic ( uwa ) channels , bandwidth - efficient modulation techniques must be employed , together with some sophisticated signal processing algorithms , such as adaptive equalization technique for the intersymbol interference caused by channel multipath propagation
在带宽严重受限的水声信道中实现高数据率通信，必须使用高带宽利用率调制技术，并结合自适应均衡等技术以有效地克服信道多途传播产生的符号间干扰。 |
| 10. | The thesis analyzes the transmitting characteristic of the uwa channel , derives the propagation losses , eigenrays and channel impulse responses of uwa channel by use of the kraken normal wave mode and the ray trace algorithm based on velocity - depth curvilinear profile approximation . based on the analysis , a scheme of auto - replying lduwarc system by means of spread spectrum technique has been designed
论文首先分析了远程声遥控信道传输特性，分别利用kraken简正波和射线跟踪模型对深海和浅海水声信道的传输特性进行分析，对信道的多径结构、衰落和环境噪声进行了计算，并在此基础上设计了基于扩频技术的自主应答式远程声遥控系统方案。 |
