Introducing the Vaisala Software Radio - state-of-art radiosonde telemetry

摘要

The fully digital telemetry link using the Software Radio between the Vaisala Radiosonde RS92-AGP and the ground equipment Vaisala DigiCORA Sounding System enables the use of modern digital modulation methods, error correction algorithms and telemetry diagnostics. The technology used in the Software Radio is similar to that used in cellular phones and their base stations. The telemetry link performance of the new sounding system is based on the properties of GMSK (Gaussian Minimum Shift Keying) modulation, Reed-Solomon error correcting coding and the Software Radio receiver. The new system allows reliable low-power narrowband radiosonde transmission and increases the temporal data resolution to two levels per second.