基于Bessel插值的數(shù)字正交相干檢波器鏡頻抑制
Rejection of Mirror Frequency in Digital Quadrature Coherent Detector via Bessel Interpolation
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摘要: 該文敘述了兩種插值方法實(shí)現(xiàn)數(shù)字正交相干檢波的基本原理,分析了信號流程,重點(diǎn)討論和比較了兩種方法的鏡頻抑制效果并做了相應(yīng)仿真,理論分析和仿真結(jié)果對于數(shù)字正交相干檢波的工程實(shí)現(xiàn)有一定參考價(jià)值。
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關(guān)鍵詞:
- 數(shù)字正交相干檢波; 插值法; 鏡頻抑制
Abstract: Basic principals of digital quadrature coherent detection are described in this paper via interpolation method. Two implementations are presented, and the signal flow is analysed. The rejection effects to mirror frequencies are discussed and compared emphatically between the two implementations. Computer simulation is carried out. Both the theoretical analysis and simulation results make a good reference to engineering application. -
楊小牛,樓才義,許建良.軟件無線電原理與應(yīng)用.北京:電子工業(yè)出版社,2001年1月第1版,第一、二、四章.[2]孫曉兵,保錚.中頻信號采樣與正交相干檢波.系統(tǒng)工程與電子技術(shù),1993,15(5):1-9.[3]楊平,耿富錄.正交采樣的理論和技術(shù)實(shí)現(xiàn).火控雷達(dá)技術(shù),1992,(1):25-30.[4]胡廣書.數(shù)字信號處理-理論、算法與實(shí)現(xiàn).北京:清華大學(xué)出版社,1997年8月第1版,第九章.[5]Sinsky A L, Pwang P C. Error analysis of a quadrature coherent detector processor. IEEE Trans.on AES, 1974, AES-10(6): 880-883. -
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