Space Monitoring Systems Measuring Receiver Development

The article discusses the process of developing a measuring receiver for testing radio tags of space monitoring systems. The relevance of this development is revealed, the scope of its application is considered. A method for constructing a high-precision control and measuring complex for calculating the parameters of radio tag transmitters for space monitoring systems based on the stricture of a direct conversion receiver is discussed. The shortcomings of the structure of the direct conversion receiver and options for compensating for them in this development through the use of a pre-calibration system of the control and measuring stand are analyzed. The principle of operation of the pre-calibration system is discussed. A structural and functional diagram of the control and measuring stand being developed is given. Interim development results are presented, a calibration frequency synthesizer controlled by a microcontroller was assembled, its characteristics were measured in laboratory conditions, and the results of the user software, calibration and demodulation of test signals are presented.