MOBILE POSITION MEASURING INSTRUMENT

申请公布号：JPS62249085(A)

申请号：JP19860093135

申请日期：1986.04.22

申请公布日期：1987.10.30

申请人：

NISSAN MOTOR CO LTD

发明人：UEKUSA YASUYUKI;TAKAI HIDEO

分类号：G01S5/10

主分类号：G01S5/10

摘要：PURPOSE:To always execute an exact measurement irrespective of the dissipation of a radio wave, by moving the tracking pulse of all loran stations to a normal tracking position and starting a tracking at the time of resetting the radio wave, when the radio waves of all the loran stations are dissipated. CONSTITUTION:A loran C radio wave is received by a receiving circuit 12 through an antenna 10, calculated by a receiving position arithmetic circuit 14, and from a calculating position selecting circuit 22, a position data is outputted. When a radio wave dissipation is confirmed by a receiving state monitoring circuit 22, a normal tracking point is presumed with regard to each loran station by sampling timing arithmetic circuits 26, 28. In the receiving circuit 12, when those sampling timings are given, a sampling pulse is moved to each normal tracking point, and also, a tracking operation of all loran stations is started.