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主办单位:体育外围 国家无线电监测中心国家无线电频谱管理中心
体育外围 >SRMC观点

wuxiandianpinpujiqixuexixitong(rfmls)

【字体: 2019年05月21日 08:56 来源:体育外围 作者: 国家无线电监测中心深圳站 郝才勇

1. RFMLS简介

suizhewuxiandianzhongduanhewulianwangshebeidebaozhaxingzengzhang,wuxiandianpinpuzhengzaibiandeyuelaiyueyongji,shibie、dingweihezuduanganraoxinhaobiandeyichangkunnan。weilegaishanpinpugongxianghuanjinghetigaowuxianwangluoanquan,xuyaokaifaxinjishulailejiepinpudeshijishiyongzhuangtai。

meiguoguofanggaojiyanjiujihuaju(defense advanced research projects agency, darpa)yu2017nian8yueshelilexindeyanjiuxiangmuwuxiandianpinpujiqixuexixitong(radio frequency machine learning systems, rfmls),tansuozaipinpulingyuliyongjiqixuexilijiewuxiandianxinhao。

体育外围 rfmlsxiangmudemubiaoshichuangjiannenggouquanmianlijiewuxiandianpinpudejiqixuexisuanfa,shibieqianzaideweihaixinhao,binggenjurenwuyouxitongzizhudizuochuxiangying。muqiangaijihuadehetongshouyulebae systems,expedition technologies,northeastern university,teledyne technologieshestanford research institute[1]。

2. 机器学习与RFMLS项目

2.1 jiqixuexidejinzhan

zaoqiderengongzhinengzhuyaojiyuzhuanjiaxitong,jizaitedingyingyongzhongzhixingjuyoumingqueguizedingyidexitong。zheixiezhuanjiaxitongyangedijiangzhuanyezhishihejueceguizexianzhizaikeyucedefanweinei,lirujiandandeyouxihegongyeliuchengkongzhi。dangqianguangfanshiyongdezishiyingwuxiandianxitongshuyuzhuanjiaxitong。yixiezhuanjiaxitonggenjuyiwangxinhaofenxidejingyanlaizhidingxiangyingdeguize,bingqieyijingbushuzaiwuxiandiangongzuohuanjingzhong,liru,gongchengshizaichengxuzhongzhidingdangyudaowuxiandianganraoshiqiehuandaobeiyongpinlvdeguize。suiranzhuanjiaxitongzaiyidingchengdushangyouxiao,danshiyikaozhuanyezhishizhidingguizedeguochengjiangguiyouhaoshi,bingqiexiangyingsudugenbushangwuxiandianxinhaodebianhua,ciwai,zheixiexitongjihubulejiepinpuzhongshijifashengdeqingkuang,yanzhongxianzhilezhuanjiaxitongdeshiyongxing。

zaiguoqudejinianzhong,jiyujiqixuexiderengongzhinengkuaisufazhanqilai。jiqixuexishiliyongdayangbenshujujianlitongjimoxing,yibianzaimeiyoumingqueguizedeqingkuangxiaduimubiaojinxingyuceheyouhua。jiqixuexizuizhongyaodefenzhishishenduxuexishenjingwangluo,dangyouzugoudeyangbenshujushi,nenggouduiqixunlianyizhixinggezhongfuzadefenleiheyucerenwu。jiyushujuqudongdejiqixuexiyijingzaiyuyinshibie、tuxiangshibieyijizidongjiashidenglingyushixianlegemingxingdejinbu。zheixiechuangxindeguanjianshicongzhenduimeigerenwudingzhidezhuanjiaxitongyanbianweicongdashujuzhongxuexidetongyongxitong。

体育外围 raner,zaiwuxiandianlingyushiyongrengongzhinengquemeiyougenshangjiqixuexidezheixiejinbu,bingqiehenshaoyouyanjiutansuochuantongwuxiandianxinhaochulihejiqixuexidejiaochadian。zhenduidangqianwuxiandianpinpuhuanjingkenengzaodaoeyipohuaideweixie,tansuoruhejiangjiqixuexiyingyongyuchuantongdewuxiandianxinhaolingyubiandezhiguanzhongyao[2]。

2.2 dangqianwuxiandianxitongdebuzu

suizheyuelaiyueduodewuxiandianzhongduan、tongxinxitong、leida、ganraojiheqitayingyongheshebeizaipinpuhuanjingzhongyunxing,diancihuanjingbiandeyuelaiyuefuza。muqiandiancihuanjingzhongcunzaidezhuyaofengxianshitaishiganzhinenglibuzu、weixiewufaquedingyijitongxinyishoueyiganrao[2]。bingqieeyiganraofashejibiandegengjiazhineng,nenggoutongguoweizhuangshenfenyiyanshiqitezheng。tu1weifeishouquanyonghutongguoweizhuangdemacdizhishitujieruwuxianwangluo。


图1. 非授权用户的威胁(来源:体育外围

体育外围 dangqiandewuxiandianxitongpubiancaiyongdeshijiyuguizedetuili(leisiyuzaoqirengongzhinengzhongdezhuanjiaxitong),zhidingleyitaoxinhaofenxihexiangyingguize。juedaduoshucileixitongdoushiyongchazhaobiaodesilu: xinhaoshujujinruxitonghouanzhaoleisidianzibiaogederuanjianjinxingfenlei,jiangshuruxinhaoyuduiyingdexiangyingchulixiangguanlian。

体育外围 chuantongdewuxiandianxitongchangchanganshunxusaomiaopinlvhekongjianquyu,jihubulejiepinpudeshijishiyongqingkuang,duigaidiancihuanjingzhongdexinhaotongjishujusuozhishenshao,liru,naxiexinhaozaimougequyuhuopinduanshiyichangde。

体育外围 2.3 rfmlsdeneirong

体育外围 weileliyongjiqixuexidejinbulaijiejuedangqianwuxiandianxitongzhongcunzaidewenti,darpazhengzaixunqiuliyongliyongjiqixuexilaigaishanpinpuguanli,bingmanzujunshiheminyongtongxinzhongduiwuxiandianpinlvriyizengzhangdexuqiu。darpatichuderfmlsxiangmushiyixiangjichuxinggongzuo,mubiaoshijianlijiangxiandaijiqixuexiyingyongyuwuxiandianpinpulingyudejishujichu。rfmlsjiangtongguojiqixuexilijiediancihuanjingbingshixianjuecenengli,congerxianzhugaishanchuantongdewuxiandianxitong。

rfmlsxiangmudezuizhongmudeshilijiewuxiandianpinpudeshijishiyongzhuangtai。liru,zhangwozhanyongpinpudexinhaozhonglei、congbeijingzhongtiquchuzhongyaodexinhao,bingshibieneixieweifanwuxiandianguizedexinhao,yishixianpinpugongxianghetigaowulianwangxitonganquan。qizhong,wuxianwangluojiangzizhuxiezuobingtuiliruhegongxiangwuxiandianpinpuhebimianganrao,shixianduipinpuziyuandezuiyouxiaoliyong。tu2weirfmlsshiyitu。


图2. RFMLS示意图(来源:体育外围

rfmlstongguojiqixuexicongwuxiandianpinpuzhongtiquchuewaidexinhaotezheng,liyongpinpudashujushibieyiqianwufajiancedaodewuxiandianxinhao,congergenghaodilijiediancihuanjing。gaixitongnenggoucongdaguimowulianwangshebeifashedewuxiandianxinhaozhongfenbianchuxiweidechayi,liru,youyuzhizaoquexiandengyinsudaozhidewuyidiaozhi,bingnengjiangqituqipianhuoruqinwangluoshebeidexinhaoqufenchulai。 zuizhong,gaixitongnenggoulijiewuxiandianhuanjingzhongzhengzaifashengdeshiqing,bingjubeiwuxiandianxinhaoquzhengnengli,yibianzaifuzadediancihuanjingzhongshibieganxingqudexinhao。zaiweilai,jiqixuexibujinkeyichulicaijidepinpushuju,erqiehaikegenjumubiaorenwulaiquedingwuxiandianchuanganqixuyaocaijinaxiepinpushuju,yijiguihuashujucaijideshijianhedidian。

3. RFMLS的组成

rfmlsjiangjianliyizhongnenggoucongshujuzhongxuexibingyirenwuweidaoxiangdewuxiandianxitong,baohanyixiasigezuchengbufen[3]。

体育外围 (1)xinhaotezhengxuexi

体育外围 rfmlsjiangliyongcaijidewuxiandianxinhaoshujuji,xuexiyongyushibiehebiaozhenggezhongminyonghejunyonghuanjingzhongdexinhaotexing,congerduixinhaojinxingjianjiedemiaoshu。

体育外围 diyidairengongzhinengzaipinpuzhongdeyingyongyilaiyuzhuanjiashejidexinhaotezheng。zuijinyoukenengtongguojiangpinpuwentiqianyidaozaishenduxuexizhongyijingchenggongyingyongdeqitalingyu,laijianlixinhaotezheng。 rfmlsjiangnenggoucongcaijidexunlianshujuzhongxuexiheshidetezhenglaimiaoshuwuxiandianxinhaohexiangguanshuxing。tu3weixinhaotezhengxuexidejiegou。


图3. 信号特征学习(来源:体育外围

体育外围 (2) zhuyiliyindao

体育外围 xiayidaiwuxiandianxitongcongbiaozhengpinpudemhzyanbianweighz。weileyouxiaodiliyongdaikuankuozhan,rfmlsbixulejienaxiexinhaoshizhongyaode,jiangchuliziyuanjizhongzaizheixiexinhaoshang,bingtongguohulveduitedingrenwudeciyaoxinhaolaijieshengziyuan。qufenzhongyaoheciyaodewuxiandianxinhaohecaozuozhiguanzhongyao。rfmlsxuyaoliyongjiqixuexisuanfajiangzhuyiliyindaodaojuyouqianzaizhongyaoxingdewuxiandiancaozuozhong,liru,zaileidaxinhaogongzuopinduanzhongjiancechuganxingqudetongxinxinhao。

tu4weizhuyiliyindaoceshi,zai500mhzdaikuandebeijingxinhaoshangdiejiaduoge“zhongyaodexinhao”,qiwangzaiceshixitongzhongjiangzheixiemubiaoxinhaofenlichulai。


图4. 区分重要信号的测试(来源:体育外围

(3)zizhuwuxiandianchuanganqipeizhi

体育外围 zishiyingwuxiandianxitongdexuduozaoqiyanjiudoujizhongzaimoniwuxiandiandianzishebei(jishepinqianduan),jianlikezhongxinpeizhidexitong,zaishejishibuhuijiangcaozuotexingshezhichenggudingbubiande。zuijindejinbuyijingchanshenglelinghuodedaguimoquanshuziwuxiandianxitong。danshizheixiejinbudekaifachengduhendi,yinweihenshaoyouyanjiujiangzheizhongshiyingxingyuzhongxinpeizhiwuxiandianchuanganqisuoxudezhinengxiangjiehe。

体育外围 rfmlsnenggougenjujidingderenwuxuexibingyouhuadaliangkecaozuodepeizhi(rumonidianzishebei、boshuzhuanxiangjiaodu、daikuanlingmindu、weizhideng),kongzhiyingjianxitonglaitigaoxinhaojieshounengli,rutu5suoshi。jiqixuexifangfajieheganzhichulihejuecetuili,nenggouzaidaxingkongzhikongjianneizidongzhongxinpeizhichuanganqi,yitigaozhengtirenwuxingneng,bingshixianfuzaderenwu。


图5. 自主无线电传感器配置(来源:体育外围

(4)boxinghecheng

rfmlsnenggouliyongjiqixuexisuanfayishuzifangshibianmahechengjihurenhekenengdefasheboxing。liyongzheizhongweitedingwuxiandianshebeichuangjianxinboxingdenengli,keyigaishanzaifuzadiancihuanjingzhongshibieyouhaoyonghudexingneng。tu6weiboxinghechengshiyitu。


图6. 波形合成(来源:体育外围

zairfmlsdesigezuchengbufenzhong,xinhaotezhengxuexiheboshuhechengshuyushepinqianduan,zhuyiliyindaohezizhuwuxiandianchuanganqipeizhishuyupinpuganzhi。

4. RFMLS的具体任务

体育外围 rfmlsnenggouzaigengjiayongjidepinpuhuanjingzhongshibiehebiaozhengwuxiandianxinhao,zheijiangweixinxingdezidonghuawuxiandianxitongheyilaitamendejunshizhihuitigongguanjiandexinxi,yibianlejiepinpushiyongdeshijiqingkuang。

zhenduirfmlsdesigezuchengbufen,jiangzhixingyixiasixiangjutirenwu[4]:

(1)wuxiandianzhiwenshibie

chuantongdewuxiananquanyilaiyumeigewuxiandianshebeideruanjianshenfen,wangwanghuibeiheikeruqinhuoyiqitafangshijinxingfuzhi。xinhaozaitongguomonidianziqijianjinxingdiaozhenghefangdadeguochengzhong,wangwanghuifujiaweiruodandutedetezheng。rfmlsnenggouxuexijiyugaifashejideguyouyingjianquexiansuodaibiaodeweiyiwuxiandianzhiwen,laishibietedingdefasheji,shitujiejuechuantongwuxiandianxitongzhongdeanquanwenti。 cirenwucezhongyuxinhaotezhengxuexi。

(2)wuxiandianzhiwenzengqiang

体育外围 weilejinyibuzengqiangwuxiananquanxing,tongxinxitongtongguojiqixuexilaidiaozhengqifasheboxingyizengqiangqiziranzhiwen。gairenwucezhongyuhechengboxing。

(3)pinpuyishi

chuantongdewuxiandianpinpujiancexitongtongguoshiyongzhaidaihexiangduijiandandejishulaishibiezhanyongpinpudexinhao(liruxinhaopinlv)。 suizheshangyongkuandaiadc、ruanjiandingyiwuxiandian、pinpugongxianghetongyongwuxiandianjishubiandechengshu,chuantongdewuxiandianjiancefangfashoudaoletiaozhan。 rfmlsxitongjiangtongguojiqixuexilijiedadaikuanzhongcunzaidezhongyaoheciyaoxinhaozhijiandechayi,yibianjianligengshiyonghezhunquedepinpuganzhixitong,shixianmubiaoxinhaojingzhunjiance。zheixiangrenwuqiangdiaozhuyiliyindao。

(4)zizhuwuxiandianxitongpeizhi

weilejinyibutigaopinpuganzhidexingneng,rfmlsjiangxunqiuxuexiruheyizuijiadefangshilaidiaozhenghepeizhiqiyingjianziyuan,congerzaifuzadediancihuanjingzhongzuidahuashibiezhongyaoxinhaodenengli。cirenwuqiangdiaozizhuwuxiandianchuanganqipeizhi。


参考文献

体育外围 [1] cognitive electronic warfare: radio frequency spectrum meets machine learning. http://interactive.aviationtoday.com/cognitive-electronic-warfare-radio-frequency-spectrum-meets-machine-learning. 2018.08.28

[2] darpa contract to apply machine learning to the radio frequency spectrum. http://www.baesystems.com/en-us/article/darpa-contract-to-apply-machine-learning-to-the-radio-frequency-spectrum.  2018.11.27

[3] the radio frequency spectrum + machine learning = a new wave in radio technology. http://www.darpa.mil/news-events/2018-08-11a. 2017.08.18

[4] radio frequency machine learning systems. http://www.darpa.mil/program/radio-frequency-machine-learning-systems. 2018.08.23.



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