电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2014年
23期
118-122
,共5页
张洪革%张颖%庞春雷%张豪
張洪革%張穎%龐春雷%張豪
장홍혁%장영%방춘뢰%장호
FPGA%卫星导航%高精度定位%系统设计
FPGA%衛星導航%高精度定位%繫統設計
FPGA%위성도항%고정도정위%계통설계
FPGA%GNSS%high accuracy positioning%system design
针对影响高精度定位的L2信号测量困难、存在多径效应等问题，分别利用Z跟踪法、MEDLL算法和改进的环路设计实现了载波相位的高精度测量；针对卫星导航（GNSS）接收机调试过程中环路参数多、不易观测等问题，设计了一种基带和定位部分的软件调试监测系统。高精度接收机和调试监测系统共同组成了卫星导航高精度定位系统。对该系统的测试结果表明，高精度接收机性能较好，精度在1cm范围内；调试监测系统达到了辅助硬件程序调试和数据监测的目的。
針對影響高精度定位的L2信號測量睏難、存在多徑效應等問題，分彆利用Z跟蹤法、MEDLL算法和改進的環路設計實現瞭載波相位的高精度測量；針對衛星導航（GNSS）接收機調試過程中環路參數多、不易觀測等問題，設計瞭一種基帶和定位部分的軟件調試鑑測繫統。高精度接收機和調試鑑測繫統共同組成瞭衛星導航高精度定位繫統。對該繫統的測試結果錶明，高精度接收機性能較好，精度在1cm範圍內；調試鑑測繫統達到瞭輔助硬件程序調試和數據鑑測的目的。
침대영향고정도정위적L2신호측량곤난、존재다경효응등문제，분별이용Z근종법、MEDLL산법화개진적배로설계실현료재파상위적고정도측량；침대위성도항（GNSS）접수궤조시과정중배로삼수다、불역관측등문제，설계료일충기대화정위부분적연건조시감측계통。고정도접수궤화조시감측계통공동조성료위성도항고정도정위계통。대해계통적측시결과표명，고정도접수궤성능교호，정도재1cm범위내；조시감측계통체도료보조경건정서조시화수거감측적목적。
The methods to solve difficulties of L2 signal measurement and multi-path effects which brought positioning error was discussed emphasized. Then high accuracy carrier phase measurement was realized by using of Z tracking algorithm, MEDLL algorithm and improved loop designed. In the process of developing and debugging GNSS receiver, there are too many loop parameters to observer, and also other problems to solve. Then the software system of base band and positioning helping for debugging, inspecting&testing was designed.High accuracy receiver and inspecting&testing system constitute GNSS high accuracy positioning system. The testing results indicate that the high accuracy satellite navigation receiver' performance was well with less than 1cm error;the purpose to assistant hardware program debugging and data inspecting was acquired.
