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本文介绍目标辐射诸如电磁波或声波之类的测向系统。此系统利用旋转的传感器,例如接收辐射波的一个天线或一对天线。当传感器旋转一圈时,可能在许多点上有输出信号。此输出信号能表示出目标的仰角和方位角,它也可以表示为一个相位差,通过将输出信号与天线的特定位置加以比较,可以将该相位差变换为误差信号,这样同样可以产生方位和仰角的误差电压。这些方位和仰角的误差电压既可以用于表示目标的方向,也可以利用伺服机械传动系统使传感器的旋转轴指向目标。此外也可采用两个旋转的捷联式天线,虽然它不指向目标,但它能产生误差信号,由此可以得出仰角和方位角的信号,最后,可以使单个天线的自旋轴与天线的主轴偏离某一角度进行旋转,这样也能够产生一个幅度调制信号,从而获得方位和仰角的误差信号。
This article describes the target radiation direction finding system such as electromagnetic waves or sound waves. The system utilizes a rotating sensor, such as an antenna or a pair of antennas that receive radiation waves. When the sensor is rotated one revolution, it is possible to output signals at many points. This output signal can represent the elevation and azimuth of the target, which can also be expressed as a phase difference, which can be transformed into an error signal by comparing the output signal with a specific location of the antenna, which in turn can yield azimuth and The error of elevation angle voltage. The error voltage at these azimuths and elevation angles can be used either to indicate the direction of the target or by using a servo mechanical drive system to orient the sensor’s axis of rotation to the target. In addition, two rotating strapdown antennas can be used. Although they do not point to the target, they can generate an error signal, which can be used to derive elevation and azimuth signals. Finally, the spin axis of a single antenna can be used to communicate with the antenna Of the spindle is rotated away from an angle, so that it can also generate an amplitude modulation signal to obtain the error signal of azimuth and elevation.