| 摘要 |
A device for reception of the signals of satellite radio navigational systems (SRNS) GPS/Glonass comprises an input unit having two filters and an amplifier, a first signal frequency converter comprising two amplifiers and a mixer two channels (GPS and (Glonass) of the second signal frequency converter, each of which includes a filter, a mixer, a controlled-gain amplifier and a threshold device consisting of a level-controlled two-bit quantizer. The device also comprises an equipment for producing clock and heterodyne frequency signals including a unit for producing the signal of a first heterodyne frequency (frequency synthesizer) whose output is connected to the reference input of the mixer of the first frequency signal converter, and two units connected in series: the output of the first unit being connected to the connected to the reference inputs of the mixers of the second signal frequency converter and the outputs of the channels of the second converter and the output of the second frequency divider being the outputs of the device. The control inputs of gain-controlled amplifiers and threshold devices are connected to the outputs of the corresponding digital-to-analog converters whose inputs are the control inputs of the device. The device allows one to receive the SRNS GPS/Glonass signals with lettered frequencies from 0 up to 12 of the frequency bands L1 and F1, respectively, using one frequency synthesizer and two frequency dividers when producing the clock and heterodyne frequencies.
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