模数转换器(ADC)性能对雷达系统的影响性分析
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摘要
在软件化雷达实现的过程中,模数转换器扮演着极其重要的角色,它是连接模拟世界和数字世界的唯一桥梁,是模拟电路和数字电路的分水岭,是雷达信号进入数字化处理的关键一步。因此,ADC的性能会对雷达的信号处理、检测估计等过程产生直接影响,对软件雷达的实现起到至关重要的作用。文章就针对模数转换器的速度、精度等性能对后续雷达信号处理的影响进行评估分析。利用Matlab软件进行数据仿真,模拟ADC在采样、量化过程中的一系列性能指标,着重分析模数转换过程中的量化噪声以及时钟抖动对雷达系统的影响,包括对信噪比的影响,雷达威力范围的影响等。最终通过仿真分析验证了理论的正确性。
In the process of realizing software-based radar,digital-to-analog converter plays an important role. It is the onlybridge connecting analog world and digital world. It is a vital step of radar signal entering digital processing. Therefore,the perfor-mance of ADC will have a direct impact on radar signal processing,the process of detection and estimation,and play an importantrole in software radar implementation. This paper analyzes and evaluates the effect of the speed and accuracy of the digital-to-ana-log converter on the subsequent radar signal processing. Data simulation using Matlab software to simulate ADC sampling,quantiza-tion process in a series of performance indicators,Focusing on the analysis of the impact of digital-to-analog conversion in the pro-cess of quantization noise and clock jitter on radar systems,including the impact on the signal to noise ratio,the impact of the rangeof the power of radar. Finally,the correctness of the theory is verified by simulation analysis.
In the process of realizing software-based radar,digital-to-analog converter plays an important role. It is the onlybridge connecting analog world and digital world. It is a vital step of radar signal entering digital processing. Therefore,the perfor-mance of ADC will have a direct impact on radar signal processing,the process of detection and estimation,and play an importantrole in software radar implementation. This paper analyzes and evaluates the effect of the speed and accuracy of the digital-to-ana-log converter on the subsequent radar signal processing. Data simulation using Matlab software to simulate ADC sampling,quantiza-tion process in a series of performance indicators,Focusing on the analysis of the impact of digital-to-analog conversion in the pro-cess of quantization noise and clock jitter on radar systems,including the impact on the signal to noise ratio,the impact of the rangeof the power of radar. Finally,the correctness of the theory is verified by simulation analysis.
引文
[1]Garenaux K,Merlet T,Alouini M,et al.Recent break-throughs in RF photonics for radar systems[J].IEEEAerospace and Electronic Systems Magazine,2007,22(2):3-8.
[2]王和国.高速高精度ADC的理论和实现[D].西安:西安电子科技大学,2009:23-34.
[3]杨文波,陈祝明,朱晓章.时钟抖动对AD有效位数的影响[J].电子科技大学学报,2008(s1):3-6.
[4]方霞芳,杨文华.高速高精度AD变换器在雷达跟踪系统中的应用[J].上海航天,2001,18(4):38-41.
[5]Janssen E,Doris K,Zanikopoulos A,et al.An 11b 3.6GS/s time-interleaved SAR ADC in 65nm CMOS[C]//2013 IEEE International Solid-State Circuits ConferenceDigest of Technical Papers.IEEE,2013:464-465.
[6]李辉,方天翔,姜俊.软件无线电在雷达信号处理中的应用[J].战术导弹技术,2006(1):92-96.
[7]张建志,张丽娜.带通采样时钟沿抖动对解调性能的影响分析[J].无线电工程,2012,42(10):10-12.
[8]高峰.跟踪雷达测距算法研究[D].成都:电子科技大学,2013:21-32.
[9]Garmatyuk D,Schuerger J,Kauffman K.Multifunctionalsoftware-defined radar sensor and data communicationsystem[J].IEEE Sensors Journal,2011,11(1):99-106.
[10]Costanzo S,Spadafora F,Borgia A,et al.High resolu-tion software defined radar system for target detection[J].Journal of Electrical and Computer Engineering,2013:7.
[11]Anderson C R,Venkatesh S,Ibrahim J E,et al.Analy-sis and implementation of a time-interleaved ADC arrayfor a software-defined UWB receiver[J].IEEE transac-tions on vehicular technology,2009,58(8):4046-4063.
[12]Rapuano S,Daponte P,Balestrieri E,et al.ADC param-eters and characteristics[J].IEEE instrumentation&measurement magazine,2005,8(5):44-54.
[13]World Marine Radar Manual,National Defense IndustryPeress,pp.229-230
[14]张志强,阮黎婷,倪涛,等.ADC模数转换器有效位计算[J].电子科技,2010,23(3):84-85.
[15]Le Roy M R,Raman S,Chu M,et al.High-Speed Re-configurable Circuits for Multirate Systems in Si Ge HBTTechnology[J].Proceedings of the IEEE,2015,103(7):1181-1196.
[2]王和国.高速高精度ADC的理论和实现[D].西安:西安电子科技大学,2009:23-34.
[3]杨文波,陈祝明,朱晓章.时钟抖动对AD有效位数的影响[J].电子科技大学学报,2008(s1):3-6.
[4]方霞芳,杨文华.高速高精度AD变换器在雷达跟踪系统中的应用[J].上海航天,2001,18(4):38-41.
[5]Janssen E,Doris K,Zanikopoulos A,et al.An 11b 3.6GS/s time-interleaved SAR ADC in 65nm CMOS[C]//2013 IEEE International Solid-State Circuits ConferenceDigest of Technical Papers.IEEE,2013:464-465.
[6]李辉,方天翔,姜俊.软件无线电在雷达信号处理中的应用[J].战术导弹技术,2006(1):92-96.
[7]张建志,张丽娜.带通采样时钟沿抖动对解调性能的影响分析[J].无线电工程,2012,42(10):10-12.
[8]高峰.跟踪雷达测距算法研究[D].成都:电子科技大学,2013:21-32.
[9]Garmatyuk D,Schuerger J,Kauffman K.Multifunctionalsoftware-defined radar sensor and data communicationsystem[J].IEEE Sensors Journal,2011,11(1):99-106.
[10]Costanzo S,Spadafora F,Borgia A,et al.High resolu-tion software defined radar system for target detection[J].Journal of Electrical and Computer Engineering,2013:7.
[11]Anderson C R,Venkatesh S,Ibrahim J E,et al.Analy-sis and implementation of a time-interleaved ADC arrayfor a software-defined UWB receiver[J].IEEE transac-tions on vehicular technology,2009,58(8):4046-4063.
[12]Rapuano S,Daponte P,Balestrieri E,et al.ADC param-eters and characteristics[J].IEEE instrumentation&measurement magazine,2005,8(5):44-54.
[13]World Marine Radar Manual,National Defense IndustryPeress,pp.229-230
[14]张志强,阮黎婷,倪涛,等.ADC模数转换器有效位计算[J].电子科技,2010,23(3):84-85.
[15]Le Roy M R,Raman S,Chu M,et al.High-Speed Re-configurable Circuits for Multirate Systems in Si Ge HBTTechnology[J].Proceedings of the IEEE,2015,103(7):1181-1196.