CAJ | 학술논문

针对传统遥感卫星传输系统中采用低阶固定调制编码（CCM）以及不能及时将信道状态反馈给发送端的问题，结合第二代数字广播电视（DVB-S2）的自适应编码调制（ACM）技术和基于卫星回传信道的数字广播电视（DVB-RCS）中的RCS技术，将其应用在遥感卫星传输系统中。同时，针对遥感数据信号受雨衰影响严重的问题，将可变降雨备余量的方法引入到链路预算中，分析结果表示，与传统固定降雨备余量相比传输数据量提高了1.21倍，与CCM相比提高了2.01倍。通过卫星工具包（STK），对基于RCS的遥感数据传输系统进行了模拟过境回传仿真，分别从信道回传方式、延迟以及雨衰备余量三个方面进行了分析，仿真结果验证了方案的正确性和有效性。
침대전통요감위성전수계통중채용저계고정조제편마（CCM）이급불능급시장신도상태반궤급발송단적문제，결합제이대수자엄파전시（DVB-S2）적자괄응편마조제（ACM）기술화기우위성회전신도적수자엄파전시（DVB-RCS）중적RCS기술，장기응용재요감위성전수계통중。동시，침대요감수거신호수우쇠영향엄중적문제，장가변강우비여량적방법인입도련로예산중，분석결과표시，여전통고정강우비여량상비전수수거량제고료1.21배，여CCM상비제고료2.01배。통과위성공구포（STK），대기우RCS적요감수거전수계통진행료모의과경회전방진，분별종신도회전방식、연지이급우쇠비여량삼개방면진행료분석，방진결과험증료방안적정학성화유효성。
Aiming at the low order Constant Coding and Modulation(CCM)in traditional remote sensing satellite transmission system and the problem that unable feedbacking the channel state to transmitting terminal timely, this paper introduces the vari-able rainfall loss margin method to the link budget and solves the problem that remote sensing data signal is seriously affected by rainfall attenuation. The Adaptive Coding and Modulation(ACM)technology in second generation digital broadcast televi-sion(DVB-S2)and the Return Channel via Satellite(RCS)technology in digital broadcast television based on RCS are adopted in the proposed method. Analysis results indicate that the data transmission of variable rainfall loss margin improves by 1.21 times than that of traditional constant rainfall loss margin and 2.01 times than that of CCM. Finally, the remote sensing data transmission system based on RCS is simulated by the Satellite Tool Kit(STK), and the simulation results from the channel re-turn way, delays and rainfall attenuation prepare margin aspects confirm the correctness and effectiveness of the proposed method.