| Anti-Jamming with Adaptive Arrays Utilizing Power Inversion Algorithm |
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| 作者姓名： | 孟大伟 冯振明 陆明泉 |
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| 作者单位： | Department of Electronic Engineering，Tsinghua University |
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| 基金项目： | Supported by the National High-Tech Research and Development （863） Program of China （No. 2006AA701108） |
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| 摘 要： | The convergence rate of the power inversion （PI） algorithm is quite sensitive to the power of the interference with the used fixed parameters in the PI algorithm leading to degradation of its ability to handle interference. This paper presents a normalized PI algorithm that traces the stochastic characteristics of the interference. The algorithm adaptively adjusts the recursive step size to determine the constrained optimized parameters for the Iowpass filter. Simulations show that the normalized PI algorithm achieves faster convergence and produces deeper nulls. The algorithm makes GPS receivers more robust in environments with large variations in the interference strength.
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| 关 键 词： | GPS 全球定位系统 抗干扰 天线阵列 功率反转 |
| 收稿时间： | 23 April 2007 |
| 修稿时间： | 26 May 2008. |
Anti-Jamming with Adaptive Arrays Utilizing Power Inversion Algorithm |
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| Dawei Meng, ¿&#x;ÿ, Zhenming Feng, ¯,Mingquan Lu, &#x;Ì.Anti-Jamming with Adaptive Arrays Utilizing Power Inversion Algorithm[J].Tsinghua Science and Technology,2008,13(6):796-799. |
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| Authors: | Dawei Meng ¿&#x;ÿ Zhenming Feng ¯ Mingquan Lu &#x;Ì |
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| Institution: | aDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The convergence rate of the power inversion (PI) algorithm is quite sensitive to the power of the interference with the used fixed parameters in the PI algorithm leading to degradation of its ability to handle interference. This paper presents a normalized PI algorithm that traces the stochastic characteristics of the interference. The algorithm adaptively adjusts the recursive step size to determine the constrained optimized parameters for the lowpass filter. Simulations show that the normalized PI algorithm achieves faster convergence and produces deeper nulls. The algorithm makes GPS receivers more robust in environments with large variations in the interference strength. |
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| Keywords: | GPS anti-jamming antenna arrays normalized power inversion |
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