Hameed Ahmad A, Majid Mohsen S. Simulation of Satellite Telemetry-Telecommand Coherent Transponder. J. eng. sustain. dev. 2007;11(2):46-68. Accessed May 11, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1720