| 잡음환경에 강인한 DGPS 기준국을 위한 GPS 초기동기 방법 |
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박정렬, 박상현, 신재호 |
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| A GPS lnitial Synchronization Method for Robust DGPS Reference Stations in Noisy Environment |
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Jeong-Yeol Park, Sang-Hyun Park, Jae-ho Sin |
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| Abstract |
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In order to enhance the robustness against noisy environment, the previous GPS initial synchronization method of DGPS reference stations adopts not only the coherent integration method but also the non-coherent integration method. However the previous GPS initial synchronization method causes the non-coherent integration loss, which is a dominant factor among the signal acquisition losses in noisy environment. And the non-coherent integration loss increases with the strength of noise signal. In this paper a novel GPS initial synchronization method is proposed for robust DGPS reference stations in noisy environment. This paper presents that the proposed GPS initial synchronization method suppresses the non-coherent acquisition loss. Furthermore, with regard to the mean acquisition time, it is shown that the number 01 the search cells 01 the proposed GPS initial synchronization method is much smaller than that 01 the previous GPS initial synchronization method Finally, through the simulation by the GPS simulator, it is seen that the GPS signal ol high signal-to-noise ratio can be acquired under increased noise floor using the proposed GPS initial synchronization method. |
| Key Words:
GPS 초기통기;DGPS 기준국;
GPS Initial synchronization;DGPS reference station;Noisy environment;
Non-coherent integration loss |
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