【摘要】：在當(dāng)今世界,全球?qū)Ш叫l(wèi)星系統(tǒng)主要分為:美國的GPS導(dǎo)航系統(tǒng)、俄羅斯的GLONASS導(dǎo)航系統(tǒng)和歐盟的GALILEO導(dǎo)航系統(tǒng)以及中國的“北斗”導(dǎo)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(dǎo)航系統(tǒng),是在子午儀衛(wèi)星導(dǎo)航系統(tǒng)的基礎(chǔ)上發(fā)展起來的,它采納了子午儀系統(tǒng)的成功經(jīng)驗(yàn)。它已經(jīng)在地質(zhì)勘探、交通運(yùn)輸、航天航空、國防軍事等領(lǐng)域發(fā)揮著越來越重要的作用。由于國外技術(shù)的封鎖,國內(nèi)對(duì)于GPS接收機(jī)的發(fā)展起步晚,并且發(fā)展相對(duì)較慢,尤其是在航空航天、軍事應(yīng)用等領(lǐng)域,需要適應(yīng)各種場景,特別是在高動(dòng)態(tài)和高精度的場景。因此,對(duì)高動(dòng)態(tài)高精度GPS接收機(jī)的設(shè)計(jì)有極其重要的意義。針對(duì)高動(dòng)態(tài)高精度GPS接收機(jī)的設(shè)計(jì),首先本論文簡單介紹了GPS導(dǎo)航系統(tǒng)的組成和GPS信號(hào)的相關(guān)特性,然后從總體上設(shè)計(jì)出了接收機(jī)的架構(gòu),對(duì)硬件電路進(jìn)行了詳細(xì)的研究,通過采用PLL和FLL相結(jié)合的方法對(duì)高動(dòng)態(tài)環(huán)境下GPS信號(hào)的碼跟蹤環(huán)路進(jìn)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(duì)其進(jìn)行了設(shè)計(jì)實(shí)現(xiàn)并進(jìn)行了測試,高動(dòng)態(tài)高精度GPS接收機(jī)的性能指標(biāo)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(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P228.4

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