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时间:2019-11-26
《基于概率统计的DS∕FH系统干扰检测算法》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第33卷第5期2014年9月飞行器测控学报JournalofSpacecraftTT&CTechnologyVol_33No.5Sep.2014引用格式:潘彦鹏,王苗,席有猷,等.基于概率统计的DS/FH系统干扰检测算法EJ3.飞行器测控学报,2014,33(5):448452.PanYanpeng,WangMiao,XiYouyou,eta1.AninterferencedetectionalgorithmforDS/FHsystemsbasedonprobabilityandstatisticstheories
2、EJ].JournalofSpacecraftTT&CTechnology,2014,33(5):448—452.基于概率统计的DS/FH系统干扰检测算法潘彦鹏,王苗,席有猷,汪葱茏(61135部队·北京·102211)摘要:基于时频分布的干扰检测算法是DS/FH(DirectSequence/FrequencyHopping,直接序列扩频/跳频扩频)系统干扰检测的传统手段,针对其运算量大、实时性差,以及无法检测某些特殊干扰信号等问题,提出一种基于概率统计的干扰检测算法。通过统计DS/FH系统频谱图中各频率的幅值出
3、现位置,以DS/FH信号与干扰信号频谱分布规律的差别为判决依据,完成DS/FH系统中干扰信号的检测。分析和仿真结果表明:该检测算法能够有效识别DS/FH系统中的典型干扰信号,与传统基于时频分布的检测算法相比,能够实现某些特殊干扰信号的有效检测;同时,由于该算法不需要进行复杂的时频联合分析,其运算复杂度大大降低,能够实现Ds/FH系统干扰信号的快速检测。关键词:直接序列扩频/跳频扩频(DS/FH);概率统计;干扰检测;时频分布中图分类号:V556;TN911.7文献标志码:A文章编号:1674—5620(2014)0
4、5—0448—05DOI:10.7642/j.issn.1674—5620.2014—05—0448—05AnInterferenceDetectionAlgorithmforDS/FHSystemsBasedonProbabilityandStatisticsTheoriesPANYanpeng,WANGMiao,XIYouyou,WANGConglong(PLAUnit61135。Beijing102211)Abstract:Aninterferencedetectionalgorithmbasedonprob
5、abilityandstatisticsisproposedtoovercomethedraw—backsofhugecomputingload,poorrealtimeperformanceandinabilitytodetectsomespecialinterferencesignalsofinterferencedetectionalgorithmbasedontime-frequencydistribution,aconventionalmeansofinterferencedetectionforDS/F
6、H(DirectSequence/FrequencyHopping)systems.InterferencesignalsinDS/FHsystemsaredetectedbasedonstatisticsofthepositionofamplitudeofvariousfrequenciesinthespectrumofDS/FHsystemstakingthedifferenceofspectrumdistributionregularitybetweenDS/FHsignalsandinterferences
7、ignalsastheevidenceofjudgment.Theresultsofsimulationandanalysisshowthatthedetectionalgorithmeffectivelyidentifiestypicalinter—ferencesignalsinDS/FHsystems.Comparedwiththeconventionalwayofdetectionalgorithmbasedontime-fie—quencydistribution,theproposedalgorithm
8、successfullydetectsspecialinterferencesignals.Moreover,thealgo—rithmsignificantlyreducescomputingcomplexityandspeedsupinterferencesignaldetectionforDS/FHsignalsbe—causeitdoesnotreq
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