RADIOSONDE SYSTEM, RADIOSONDE SYSTEM RECEIVER AND SIGNAL PROCESSING METHOD IN A RADIOSONDE RECEIVER

摘要

This publication disclose the signal processing methods in a kind of radiosonde system, radiosonde system receiver and radiosonde receiver. Radiosonde system includes that at least one radiosonde (1) has the device for obtaining position and/or weather data and carries out downstream transmission to the data by radio-frequency path, signal capture means (2,3), for receiving the weather and/or position data, for receiver means (4) for handling received signal, which includes that the frequency of RF circuit elements (11) for down conversion reception signal is known as the first intermediate frequency to lower frequency. According to the present invention, receiver means (4) include the intermediate frequency that sampling means (12) are sampled, at least two digital mixer tools (13), for carrying out selective filter to required frequency band from sampled signal, processor device (14) handles desired frequency band for parallel symbol.