with recently widespread use of mobile phones and sms communication in iran and reformulation of conventional communication practices, short message advertisements have recently started to gain prominence in the world of advertisement as a quick, less costly, available and reliable means of introducing the products and services offered by the companies and institutions. with this in mind, the p...

Massive global Low Earth Orbit (LEO) constellations have been developed rapidly with the characteristics of larger number and shorter orbital periods LEO satellites in recent years. The increasing requirements real-time orbit determination emergency data transfer full arc can hardly meet traditional strategies based on regional ground stations. An integrated communication navigation service arc...