제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 2002년도 ICCAS
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- Pages.33.6-33
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- 2002
DSP Architecture for Weak Signal Acquisition in Assisted GPS
- Cho, Deuk-Jae (Chungnam Nat'l Univ.) ;
- Choi, Il-Heung (Chungnam Nat'l Univ.) ;
- Moon, Sung-Wook (Chungnam Nat'l Univ.) ;
- Lee, Sang-Jeong (Chungnam Nat'l Univ.) ;
- Park, Sang-Hyun (NAVICOM CO. Ltd.)
- 발행 : 2002.10.01
초록
For RF sensitivity enhancement, the previous assisted GPS acquisition architecture adopts not only the coherent integration technique but also the non-coherent integration technique since the long coherent integration time increases the number of the frequency search cells. But the non-coherent integration technique induces the squaring loss, which is the dominant factor among the acquisition losses of assisted GPS dealing with weak GPS signals. This paper proposes an efficient architecture for weak signal acquisition in assisted GPS. In this paper, it is explained that the proposed architecture reduces the squaring loss using a modified non-coherent integration technique. Furthermore, it is..
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