【摘要】：在當今世界,全球導航衛(wèi)星系統(tǒng)主要分為:美國的GPS導航系統(tǒng)、俄羅斯的GLONASS導航系統(tǒng)和歐盟的GALILEO導航系統(tǒng)以及中國的“北斗”導航系統(tǒng)。全球定位系統(tǒng)(Global Positioning System,縮寫GPS),是美國第二代衛(wèi)星導航系統(tǒng),是在子午儀衛(wèi)星導航系統(tǒng)的基礎上發(fā)展起來的,它采納了子午儀系統(tǒng)的成功經驗。它已經在地質勘探、交通運輸、航天航空、國防軍事等領域發(fā)揮著越來越重要的作用。由于國外技術的封鎖,國內對于GPS接收機的發(fā)展起步晚,并且發(fā)展相對較慢,尤其是在航空航天、軍事應用等領域,需要適應各種場景,特別是在高動態(tài)和高精度的場景。因此,對高動態(tài)高精度GPS接收機的設計有極其重要的意義。針對高動態(tài)高精度GPS接收機的設計,首先本論文簡單介紹了GPS導航系統(tǒng)的組成和GPS信號的相關特性,然后從總體上設計出了接收機的架構,對硬件電路進行了詳細的研究,通過采用PLL和FLL相結合的方法對高動態(tài)環(huán)境下GPS信號的碼跟蹤環(huán)路進行了優(yōu)化,采用優(yōu)化后的載波相位平滑偽距的算法改善了定位精度,最后對其進行了設計實現并進行了測試,高動態(tài)高精度GPS接收機的性能指標滿足要求。
[Abstract]:In today's world, the global navigation satellite system is mainly divided into: the GPS navigation system of the United States, the GLONASS navigation system of Russia, the Galileo navigation system of the European Union and the "Beidou" navigation system of China. Global Positioning system (GPS) is the second generation of American satellite navigation system, which is developed on the basis of Meridian Satellite Navigation system. It adopts the successful experience of Meridian system. It has been playing a more and more important role in geological exploration, transportation, aerospace, national defense and military. Due to the blockage of foreign technology, the development of GPS receiver starts late in China, and the development is relatively slow. Especially in aerospace, military applications and other fields, it is necessary to adapt to various scenarios, especially in high-dynamic and high-precision scenarios. Therefore, it is very important for the design of high dynamic and high precision GPS receiver. Aiming at the design of high dynamic and high precision GPS receiver, the composition of GPS navigation system and the related characteristics of GPS signal are introduced briefly in this paper. Then, the architecture of receiver is designed, and the hardware circuit is studied in detail. The code tracking loop of GPS signal in high dynamic environment is optimized by the combination of PLL and FLL, and the positioning accuracy is improved by using the optimized carrier phase smoothing pseudorange algorithm. Finally, it is designed and implemented and tested. The performance index of high dynamic and high precision GPS receiver meets the requirements.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P228.4

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