| 短波跳频系统信道的无源探测研究 |
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| 引用本文： | 邹学玉,甘良才. 短波跳频系统信道的无源探测研究[J]. 电波科学学报, 2001, 16(4): 538-542 |
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| 作者姓名： | 邹学玉 甘良才 |
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| 作者单位： | 1. 江汉石油学院电子与信息工程系,湖北,荆州,434102
2. 武汉大学物理与电子信息学院,湖北,武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目 (6 9772 0 15 ) |
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| 摘 要： | 基于短波跳频FH／QDPSK系统的FFT解调，提出了对短波信道特征－信号能量进行无源探测的方法，该方法利用在短波信道中的各频隙上检测到的信号能量分布来确定具有较高可通率的频段和频隙。根据数值模拟，给出了在信噪比为－10dBW-10dBW、平均噪声功率为－3dBW-10dBW时信号的平均检测概率和平均虚警概率曲线，为选择适当的判决门提供理论参考。
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| 关 键 词： | 无源探测 短波通信 跳频通信 信息 |
| 文章编号： | 1005-0388(2001)04-0538-05 |
A study on the method of passive sounding of channels for short wave frequency-hopping system |
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| ZOU Xue yu GAN Liang cai. A study on the method of passive sounding of channels for short wave frequency-hopping system[J]. Chinese Journal of Radio Science, 2001, 16(4): 538-542 |
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| Authors: | ZOU Xue yu GAN Liang cai |
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| Affiliation: | ZOU Xue yu 1 GAN Liang cai 2 |
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| Abstract: | Based on the implement of FFT (fast Fourier transform) demodulator in FH/QDPSK System, this paper propose a method of passive sounding of short wave channel energy. This method can determinate which band and which band chip to have a good condition of built up communication link by using the detected signal energy on the each of bands and band chips. The average detection probability and false alarm probability have been gotten with simulation on this condition of SNR changed from -10dB to 10dB and average noise power changed from -3dBW to 10dBW. Those results and analyses can offer a better reference how to select a appropriate threshold criterion. |
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| Keywords: | passive sounding detection probability false alarm probability |
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