ACQUISITION AND TRACKING PERFORMANCE OF SATELLITE NAVIGATION SYSTEM SIGNAL USING TIERED DIFFERENTIAL POLYPHASE CODE

GwangHee Jo 1, JuHyun Lee 2, JaeHee Noh 3, SangJeong Lee 4, JinHyuk Lee 5

1dept. electronics engineering Chungnam National University Daejeon, Republic of Korea

2dept. Radio Navigation Navcours Daejeon, Republic of Korea

3dept. electronics engineering Chungnam National University Daejeon, Republic of Korea

4dept. electronics engineering Chungnam National University Daejeon, Republic of Korea

5dept. electronics engineering Chungnam National University Daejeon, Republic of Korea

DOI: 10.1515/aon-2019-0001

ABSTRACT

In this paper, we analyze the acquisition and tracking performance of signal using a tiered differential polyphase code as the secondary code. The Zadoff-Chu sequence is known to have a CAZAC (Constant Amplitude Zero Auto-Correlation) characteristics. The secondary code generated by differential encoding of the Zadoff-Chu sequence also has the same characteristics as the Zadoff-Chu sequence. Therefore, long integration will give better correlation results. We compare signal acquisition and tracking performance when using the NH sequence and Zadoff-Chu sequence as the secondary code. Monte-carlo simulation is performed using MATLAB. We use the probability of detection and the mean acquisition time for signal acquisition performance and tracking jitter for signal tracking performance.

KEYWORDS

Zadoff-Chu sequence, polyphase code, acquisition, tracking

REFERENCES

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