The trajectory is a significant factor in the performance of energy systems, including energy production and consumption for solar-powered airships in cruise, especially in high-altitude wind fields. Therefore, this paper aims to analyze the maximum net energy of high-altitude airships based on different cruise strategies, presenting the constant and variable height operation strategies in target tracking for solar-powered airships. This study proposes the solar radiation model and energy model for high-altitude solar-powered airships to calculate their energy production and consumption. We use the natural wind field data to study the flight condition of an airship in detail and obtain the maximum net energy and optimal ascending velocity for the high-altitude airship in the actual wind field. The results show that the start time in target tracking for airships greatly influences optimal trajectory and strategy. The optimal ascending and descending velocities at the starting time of 6:00 are 1 m/s and will not change by cruise direction. These results are beneficial to improve endurance performance of high-altitude airships in cruise.

轨迹是能源系统性能的一个重要因素，包括巡航中太阳能飞艇的能源生产和消耗，特别是在高空风场。因此，本文旨在分析基于不同巡航策略的高空飞艇的最大净能量，提出太阳能飞艇目标跟踪中的恒高和变高运行策略。本研究提出了高空太阳能飞艇的太阳辐射模型和能量模型，以计算其能量生产和消耗。我们利用自然风场数据详细研究飞艇的飞行状态，得到实际风场中高空飞艇的最大净能量和最佳上升速度。结果表明，飞艇目标跟踪的开始时间对最优轨迹和策略有很大影响。6:00 开始时间的最佳上升和下降速度为 1 m/s，不会因巡航方向而改变。这些结果有利于提高高空飞艇在巡航中的续航能力。