| 摘要: |
| 孔径渡越效应是相控阵的一个特殊问题，针对此推导出了它产生的幅度/相位频率特性表达式，提出将相控阵等效为传输链路中的一个时变滤波器，构成相控阵带限通信系统，进而可利用通信系统的一些成熟理论对其有效性、可靠性、适应性等主要性能指标进行深入研究。作为例子，分析了它引起的附加误码及其等效的载噪比恶化等通信可靠性指标，并给出了改进措施。 |
| 关键词: 相控阵测控系统；孔径渡越效应；时变滤波；限带通信 最佳传输 匹配滤波 奈奎斯特滤波 |
| DOI：10.20079/j.issn.1001-893x.240911002 |
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| 基金项目: |
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| Phased TT&C Technology(Ⅵ):Time-varying Filtering Characteristics of Phased Array and Its Impact on Communication Performance |
| LIU Jiaxing |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| Aperture transition effect is a special problem of phased array.In response to this problem,the author derives its amplitude/phase frequency characteristics and proposes to make phased array be equivalent to as a “time-varying filter” in the transmission link to form a phased array band-limited communication system.Then,some mature theories of communication systems can be used to study its main performance indicators such as effectiveness,reliability,and adaptability.As an example,the author analyzes the additional errors caused by it and its equivalent carrier to noise ratio deterioration and other reliability indicators,and provides improvement measures. |
| Key words: TT&C system aperture transition effect time-varying filtering band-limited communication best transmission matching filter Nyquist filter |
