PROBLEM TO BE SOLVED: To provide a monopulse tracking demodulation receiving device which allows securing a large dynamic range of an error signal, according to the situation and increase in level detection accuracy of the error signal.;SOLUTION: This monopulse tracking demodulation receiving device includes a compositor for vector-constituting an azimuth component signal and a derricking component signal and outputting, as a scalar signal, the amplitude of a vector signal obtained by the composition; a level comparator for comparing the amplitude of the scalar signal with the amplitude of a comparison signal and outputting a first gain control signal according to the comparison resu and a level converter for converting the level of a second gain control signal generated based on a sum signal input from an upper device, based on the first gain control signal. Based on the second gain control signal whose level is converted by the level converter, the amplification factor of the first gain variable amplifier for obtaining the azimuth component signal, and the derricking component signal is controlled.;COPYRIGHT: (C)2010,JPO&INPIT
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