无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
7期
19-22,82
,共5页
频域非完整信号%单基线干涉仪%无模糊测向%非完整频域相位信息综合处理%电子侦察%频谱监测
頻域非完整信號%單基線榦涉儀%無模糊測嚮%非完整頻域相位信息綜閤處理%電子偵察%頻譜鑑測
빈역비완정신호%단기선간섭의%무모호측향%비완정빈역상위신식종합처리%전자정찰%빈보감측
signal with partial frequency elements%single base-line interferometer%direction finding without ambiguity%integrative processing of partial phase in frequency domain%electronic reconnaissance%spectrum surveillance
随着信号多样性的发展和超宽带信号的广泛应用，信号的瞬时带宽越来越大，造成目前正在使用的大量窄带侦察接收机无法完整接收到该类信号的所有频谱分量，但是对此类信号进行测向又是电磁频谱监测和电子侦察的迫切需求。针对这一情况，分析了在接收机带宽小于信号带宽条件下信号接收的畸变问题，建立了频域非完整信号的数学描述模型，以此为基础利用单基线干涉仪无模糊测向理论实现了对该类信号的有效测向，并分析了这一过程中非完整频域相位信息的综合处理方法。仿真结果表明，对超宽带通信和超宽带雷达均可有效获得信号的来波方向，从而验证了该方法的可行性和实用性。
隨著信號多樣性的髮展和超寬帶信號的廣汎應用，信號的瞬時帶寬越來越大，造成目前正在使用的大量窄帶偵察接收機無法完整接收到該類信號的所有頻譜分量，但是對此類信號進行測嚮又是電磁頻譜鑑測和電子偵察的迫切需求。針對這一情況，分析瞭在接收機帶寬小于信號帶寬條件下信號接收的畸變問題，建立瞭頻域非完整信號的數學描述模型，以此為基礎利用單基線榦涉儀無模糊測嚮理論實現瞭對該類信號的有效測嚮，併分析瞭這一過程中非完整頻域相位信息的綜閤處理方法。倣真結果錶明，對超寬帶通信和超寬帶雷達均可有效穫得信號的來波方嚮，從而驗證瞭該方法的可行性和實用性。
수착신호다양성적발전화초관대신호적엄범응용，신호적순시대관월래월대，조성목전정재사용적대량착대정찰접수궤무법완정접수도해류신호적소유빈보분량，단시대차류신호진행측향우시전자빈보감측화전자정찰적박절수구。침대저일정황，분석료재접수궤대관소우신호대관조건하신호접수적기변문제，건립료빈역비완정신호적수학묘술모형，이차위기출이용단기선간섭의무모호측향이론실현료대해류신호적유효측향，병분석료저일과정중비완정빈역상위신식적종합처리방법。방진결과표명，대초관대통신화초관대뢰체균가유효획득신호적래파방향，종이험증료해방법적가행성화실용성。
With the development of signal diversity and the wide application of ultra-wide band signals,the bandwidth of signal becomes wider and wider.Currently,many reconnaissance receivers with narrow receiving band can not acquire all the frequency ele-ments of this kind of signals simultaneously.However,the direction finding of these signals is quite necessary for spectrum surveillance and electronic reconnaissance.In this paper,the distortion of received signal is discussed on condition that the frequency bandwidth of the receiver is narrower than that of the signal.The mathematic model for signal with partial frequency elements is constructed,based on which the direction finding is accomplished using the single base-line interferometer direction finding theory without ambiguity,and the integrative processing method for partial phase information in frequency domain is analyzed.The simulation results show that the direc-tion information can be acquired for ultra-wide band signals of communication and radar, which validates the feasibility and practicability of this method.
