| 引用本文: | 单长胜，尹曙明，郑 哲，郝利云. 一种整数抽取结合小数插值重采样技术研究[J]. 雷达科学与技术, 2024, 22(1): 1-4.[点击复制] |
| SHAN Changsheng, YIN Shuming, ZHEN Zhe, HAO Liyun. A Study on Resampling Technique Combining Integer Extraction with Decimal Interpolation[J]. Radar Science and Technology, 2024, 22(1): 1-4.[点击复制] |
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| 摘要: |
| 射频直采技术近年来在雷达、通信、电子对抗尤其是一体化接收等领域得到了广泛的应用。然而射频采样数据率极高，导致后续信号传输与实时处理难度变大。数字重采样技术能够在数字域降低采样率，从而减轻射频直采带来的信号处理压力。本文针对数字重采样技术开展研究，提出一种整数抽取结合小数插值重采样方法，推导了理论模型，给出了相应的参数递推解算方法，仿真验证了方法的有效性。采用本文所提方法，既可解决在射频高采样率下，直接进行小数插值带来的数字信号实时处理压力，又可在保证信号质量的情况下，解决特殊场景下精确变采样率处理的需求，进而实现对大范围任意分数倍抽取。 |
| 关键词: 射频直采技术 重采样技术 整数抽取 小数插值 |
| DOI：DOI:10.3969/j.issn.1672-2337.2024.01.001 |
| 分类号:TN927 |
| 基金项目: |
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| A Study on Resampling Technique Combining Integer Extraction with Decimal Interpolation |
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SHAN Changsheng, YIN Shuming, ZHEN Zhe, HAO Liyun
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1. Beijing Space Information Transmission Center, Beijing 102300, China;2. Beijing Institute of Technology, Beijing 100081, China
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| Abstract: |
| Radio frequency (RF) direct acquisition technology has been widely applied in radar, communication, electronic warfare, especially in the field of integrated receiver. However, the extremely high sampling rate of RF data leads to greater difficulty in subsequent signal transmission and real?time processing. Digital resampling technology can reduce the sampling rate in the digital domain, thereby alleviating the signal processing pressure caused by RF direct sampling. In this paper, the digital resampling technology is studied, and a resampling method combining integer extraction with decimal interpolation is proposed. The theoretical model is derived, and the corresponding parameter recurrence solution method is presented. The simulation verifies the effectiveness of the method. The proposed method can not only reduce the pressure of real?time digital signal processing caused by direct decimal interpolation at high sampling rates in radio frequency, but also meet the need of precise variable sampling rate processing in special scenarios while ensuring signal quality, thus achieving large?scale and arbitrary fractional extraction. |
| Key words: radio frequency direct acquisition technology resampling technology integer extraction decimal interpolation |
