An example of VHF radar signal processing
Darko Pijević, Aleksandar Ristić, Dragan Nikolić, Dejan Ivković, Zvonko Radosavljević · 2024
Track While Scan (TWS) radars are generally used in defense systems, which supervise the positions of the target and generate the measurements, scan by scan. They measure a target's coordinates, determine its trajectory, and predict its next location. The selection and adaptation of the technical requirements of the optimal hardware for processing and displaying the radar image is related to several serious challenges, such as the availability and price of components on the market, the type of modulation, frequency agility, shielding from interference, computational complexity of processing, type and technology of the antenna system. In the paper, a complete example of coherent hardware processing (reception and transmission) of signals for VHF band radar is proposed. The proposed hardware generates trigger signals, modulates the transmit signal, transmits via a semiconductor HPA transmitter and then at the reception receives signals in the analog domain, converts them, processes them and displays the radar image on the monitor. The numerical experiments have shown the possibility of signal processing in real time on the selected platform showed the justification of the application.