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数字通信是近代通信技术的新发展,是高效率高速率通信的重要手段。干扰和抗干扰,窃密和保密,也就是电子对抗和反电子对抗,是电子技术中的一个重要方面。数字通信系统在电子对抗环境中是否仍能充分发挥作用,取决于所采用的反对抗技术,卫星数字通信系统也不例外。卫星数字通信,也就是利用卫星采集信息和转发信息,在人类生活中起着重要的作用。这些信息通过下行和上行无线信道,在卫星和地面站之间进行交换。另外,为了对卫星的运
Digital communication is a new development of modern communication technology and an important means of high-efficiency and high-speed communication. Interference and interference, theft and confidentiality, that is, electronic warfare and anti-electronic warfare, is an important aspect of electronic technology. Whether digital communication systems can still function adequately in the electronic warfare environment will depend on the anti-countermeasures technology employed, and satellite digital communications systems are no exception. Satellite digital communications, that is, using satellites to collect and forward information, plays an important role in human life. These messages are exchanged between satellites and ground stations through downlink and uplink wireless channels. In addition, in order to transport the satellite