Design and Implementation of Electromagnetic Spectrum Sensing Load Based on Software Radio

This study proposed the design and implementation method of an electromagnetic spectrum sensing load based on software radio. In view of small volume and low energy of micro-nano satellites, the load adopted the hardware structure based on software radio architecture to receive broadband radio signal. The sampling signal was then preprocessed by the window function so as to suppress frequency spectrum leakage. The designed load is featured by reasonable design and favorable software performances, which can achieve the electromagnetic spectrum sensing for the radio signal within the frequency range of 70–6000 MHz. Meanwhile, the load possesses the parameter re-settings and on-orbit reconstruction functions so as to ensure various types of special spectrum sensing tasks.