1.完整项目描述和程序获取
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2.部分仿真图预览
3.算法概述
空天地一体化网络是一种将卫星通信、高空平台通信和地面通信有机结合的综合通信系统。这种网络架构能够充分发挥各层网络的优势，提供全球化、无缝覆盖的通信服务。本博客将详细解析空天地一体化网络通信系统中涉及的数学原理，特别是QPSK调制、信道模型和误码率计算的相关理论。
4.部分源码
% 选择一个随机卫星、HAP和地面终端
satIdx = randi(numSatellites);
hapIdx = randi(numHAPs);
groundIdx = randi(numGroundTerminals);
% 计算卫星到HAP的链路
satToHapDist = norm(satLocations(satIdx,:) - hapLocations(hapIdx,:));
satToHapElev = asin((satLocations(satIdx,3) - hapLocations(hapIdx,3)) / satToHapDist) * 180/pi;
fspl1 = freeSpacePathLoss(satToHapDist, f);
atmosAtt1 = atmosphericAttenuation(f, satToHapElev);
scint1 = troposphericScintillation(f, satToHapElev, satAltitude);
shadow1 = shadowFading();
channelGain1 = 4/(fspl1 + 10^(atmosAtt1/10) + scint1 + shadow1);
% 计算HAP到地面的链路
hapToGroundDist = norm(hapLocations(hapIdx,:) - [groundLocations(groundIdx,1), groundLocations(groundIdx,2), 0]);
hapToGroundElev = asin((hapLocations(hapIdx,3) - 0) / hapToGroundDist) * 180/pi;
fspl2 = freeSpacePathLoss(hapToGroundDist, f);
rainAtt2 = rainAttenuation(f, hapToGroundDist, rainRate, hapToGroundElev);
atmosAtt2 = atmosphericAttenuation(f, hapToGroundElev);
scint2 = troposphericScintillation(f, hapToGroundElev, hapAltitude);
shadow2 = shadowFading();
multipath2 = rayleighFading();
channelGain2 = 5/(fspl2 + 10^(rainAtt2/10) + 10^(atmosAtt2/10) + scint2 + shadow2 + multipath2);
% 总信道增益
channelGain = channelGain1 * channelGain2;
receivedPower = txPower * channelGain;
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