Ku波段海表波高／潮位探测系统的研究

本文提出的Ｋｕ波段海表波高／潮位探测系统在测量精度和使用方便上优于沿用至今的波高计和浪潮仪。该探测系统为一机两用，使１４．５ＧＨｚ微波信号通过两只检相管比较Ｄｏｐｐｌｅｒ回波相位，而精确测得波高，使１１ＧＺｚ微波信号通过三角波调频的相干差频可精确测得海表潮位。基于两路信号共用一部天线，采用正交极化工作且各插入带通滤波器，使隔离度在８０ｄＢ以上，相互串扰抑制到很微弱，确保了测量精度在ｃｍ级，使实测值

Research of Ku-Band Sounding System for Sea-Surface Wave-Height/Tide-Level

A new Ku-band souding system for measuring wav e-height and tide-level is proposed in this paper.It is better than the wave- height meter or wave-tide meter in precision,and is easy to operate.Two functio ns of the sounding system are:It can accurately measure the wave-height through comparing the phase of the 14GHz Doppler echoes passing through the two phase- detector diodes.The tide-level can also be measured accurately through coherent differential frequency of triangular wave modulated 11GHz FM signals .Since the signals of the two channels are cross polarized and each channel is inserted wi th BPF respectively,the isolation between two channels is over 80dB, and the cr oss talk is very weak.The measurement precision lies in cm order,and the measure d value is consistent with the standard one.