会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 61. 发明授权
    • Radar terrain signal simulator
    • 雷达地形信号模拟器
    • US4168582A
    • 1979-09-25
    • US652286
    • 1976-01-26
    • Arthur J. Heidrich
    • Arthur J. Heidrich
    • G01S7/40G09B9/40G01S9/00G11C19/00
    • G09B9/40G01S7/4052G01S2007/4082
    • To simulate the radar return from terrain of particular generic type (e.g. desert, forest, cultivated land) it is a known suggestion to employ closed-loop shift register with feedback suitable to produce particular "texture" of return from specified terrain. It is here disclosed to synchronize output of such register with azimuthal position of simulated search radar; but this alone gives "grainy" effect because "smeary" or slowly changing amplitude with range in PPI sweep is not matched by corresponding lateral, or azimuthal, "smear". This objectionable effect is overcome by providing three sets of output terminals on feedback register, giving outputs corresponding to shifts for azimuths N, N+1, and N+2. By buffing together the three outputs, an azimuthal variation at a slow rate, comparable with the variation with range, is obtained, giving a more deceptive (and thus better) simulation.
    • 为了模拟特定通用类型(例如沙漠,森林,耕地)的地形的雷达回波,已知的建议是采用具有反馈的闭环移位寄存器,该反馈适用于产生特定地形的特定“纹理”。 这里公开了将这种寄存器的输出与模拟搜索雷达的方位位置同步; 但是由于PPI扫描中的“smeary”或者随范围缓慢变化的幅度与相应的横向或方位角“涂片”不匹配,所以会产生“粒状”效应。 通过在反馈寄存器上提供三组输出端子来克服这个令人反感的效果,给出对应于方位N,N + 1和N + 2的移位的输出。 通过将三个输出结合在一起,获得与变化范围相当的慢速方位角变化,给出更具欺骗性(因此更好)的模拟。