| DME脉冲调制信号波形参数对空间频谱占用的影响分析 |
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| 引用本文： | 方成.DME脉冲调制信号波形参数对空间频谱占用的影响分析[J].宇航计测技术,2017,37(1):19. |
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| 作者姓名： | 方成 |
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| 作者单位： | 1、西北大学 信息科学与技术学院，西安 710127 |
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| 摘 要： | 航空测距器DME的开发、调试和性能验证都要用到高斯双脉冲调制格式的DME信号。由于专用的DME信号模拟器技术复杂、价格昂贵,人们常用具有快沿双脉冲调制功能的模拟信号源替代。本文以航空测距器DME信号要求为依据,初步分析了这种替代可能存在的问题,并通过实验对不同边沿条件下高斯双脉冲、矩形双脉冲调制信号的功率频谱占用情况进行了验证。
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| 关 键 词： | 高斯双脉冲 矩形双脉冲 上升、下降时间 功率谱 |
Analysis of the Influence of the Waveform Parameters of DME Pulse Modulation Signal on the Spatial Spectrum Occupancy |
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| FANG Cheng.Analysis of the Influence of the Waveform Parameters of DME Pulse Modulation Signal on the Spatial Spectrum Occupancy[J].Journal of Astronautic Metrology and Measurement,2017,37(1):19. |
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| Authors: | FANG Cheng |
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| Institution: | 1、College of Information Science and Technology，Northwest University，Xi’an 710127，China |
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| Abstract: | The DME signal of Gauss double pulse modulation format is applied to the development, debugging and performance verification of DME system.Because of the complexity and high cost of the special DME signal simulator, research staff often use the analog signal source with fast dual pulse modulation instead Based on DME signal requirements，this paper analyzed the possible problems of this substitution，and verified the power spectrum occupancy of Gauss double pulse and rectangular pulse modulation signals under different edge of pulse conditions by experimental tests.The results are consistent with the analysis，indicating the substitution has its limitations. |
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| Keywords: | Gauss double pulse Rectangular double pulse Rise and fall times Power spectrum |
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