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Design and Analysis of the Long Period Navigation Signal Search Algorithm Using Acquisition Code
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The public regulated restriction signals are encrypted generally with the very long period code in Global Navigation Satellite System (GNSS) including Global positioning system (GPS). Unlike civilian navigation signals, the long period code is used for the security enhancement purpose. The navigation signals with the long period code are very difficult to acquire due to their own non-periodic characteristics. The application of Acquisition Code (AC) is required for the proper working of the long period navigation signals. In this paper, we present the design and analysis results of the navigation signal with acquisition code. Specifically, the acquisition performance and Time To First Acquisition (TTFA) are presented analytically. In the process of the navigation signal design, we include AC length, insertion pattern, code rate, and filter effects. Also, the navigation signal receiving process include the effects of Side Band Filter (SBF), doppler frequency and code phase errors. The indicators that used to evaluate navigation signal acquisition performance are the detectability and TTFA.
Abstract
The public regulated restriction signals are encrypted generally with the very long period code in Global Navigation Satellite System (GNSS) including Global positioning system (GPS). Unlike civilian navigation signals, the long period code is used for the security enhancement purpose. The navigation signals with the long period code are very difficult to acquire due to their own non-periodic characteristics. The application of Acquisition Code (AC) is required for the proper working of the long period navigation signals. In this paper, we present the design and analysis results of the navigation signal with acquisition code. Specifically, the acquisition performance and Time To First Acquisition (TTFA) are presented analytically. In the process of the navigation signal design, we include AC length, insertion pattern, code rate, and filter effects. Also, the navigation signal receiving process include the effects of Side Band Filter (SBF), doppler frequency and code phase errors. The indicators that used to evaluate navigation signal acquisition performance are the detectability and TTFA.
참고문헌 (9)
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