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| A Method of Acquiring Carrier Difference Phase in Spread Spectrum Orientation System by Pilot Symbols |
| Pan Wen-sheng①; Tang You-xi①; Zhao Hong-zhi①; Li Shao-qian①; Li Ying-tao② |
| ①National Key Laboratory of Communication, UEST of China, Chengdu 610054, China;②Huawei Co., Shenzhen 518129, China |
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Abstract Considering the spread spectrum orientation systems using difference carrier phase to measure distance, this paper proposed a method for acquiring difference carrier phase by using pilot symbol. Using the spread-spectrum codes, signals from different transmitters can be distinguished, and the interstation interference is depressed. In the paper, the mathematical model for the proposed method is deduced, and the mean and variance of the acquired carrier difference phase of the proposed method are analyzed and simulated. The results show that the method is valid.
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Received: 14 January 2004
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2005, Vol. 27 
