GNSR接收机及有效波高反演方法研究.docx

北京化工大学硕士学位论文 析及对比，验证了给出方法的优越性及可行性，为后续的研究应用给予了 实用价值及现实性意义。 关键词：GNSS．R，接收机，有效波高，干涉复数场，信噪比 II 万方数据  ABSTRACT RESEARCH oN RECEIVER AND INVERSION METHoD oF SIGNIFICANT、删E HEIGHT BASED ON GNSS．R ABSTRACT At present，the Global Navigation Satellite system reflected signal (Global Navigation Satellite Systems Reflectometry，GNSS-R)technology is a new rising remote sensing technology．There are several advantages of GNSS-R technology such as without requirement of sole transmitter，rich of signal resource，high time and space resolution，all—weather，strong immediacy， low cost．So it is one of the current hotspot in field of GNSS applications．The technology is mainly used in inversion of sea surface wind speed and direction， sea ice detection and significant wave height and SO on surface information acquisition，which are of great importance to service ocean disaster prevention and reduction，the navigation safety． This thesis first introduces the available signal sources of GNSS and elaborates the technology principle and characteristic of GNSS-R in detail．On the basis of the study,the marine reflection system architecture and each functional module using GNSS—R is described．According to the shore-based experimental data，the receiver not only realize acquisition and tracking algorithm of direct channel，but also signal processing ofreflection channel． Secondly,on the base of studying the significant wave height inversion III 万方数据  北京化工大学硕士学位论文 methods using GNSS—R，there introduces technology principle and specific process of using DCF and ICF measuring significant wave height．By studying the reflection characteristics of signal power and signal--to--noise ratio of the research，this paper presents a new method of inversion of SWH using reflection signal—to—noise ratio，and gives details of the technical route and the concrete process． Finally,upon completion of the above research，through the shore-based platform to build GNSS-R receiver,deployment and implementation of the inversion