This work provides the design methodology of a radioisotope thermophotovoltaic system (RTPV) using spectral control for space missions. The focus is on the feasibility of a practical system by using two-dimensional micropatterned photonic crystal emitters, selecting the proper thermophotovoltaic cell and insulation material to exclude material incompatibilities, to optimize the system efficiency by impedance matching and to design a radiator with minimum mass. In the last section, a design example is presented based on the tested indium gallium arsenide antimonide (InGaAsSb) cells. It is shown computationally that, in using the experimentally tested InGaAsSb cells, the RTPV generator is expected to reach an efficiency of 8.6% and a specific power of $10.1\mathrm{W}/\mathrm{kg}$ with advanced radiators. Using the more efficient InGaAs cells, the system can expect to triple the figure of merits of the radioisotope thermoelectric generator, promising to reach $\sim 18\%$ and $21\mathrm{W}/\mathrm{kg}$, respectively. With a high performance device, the results of this work can lead to a functional prototype for further research focusing on manufacturability and reliability.

这项工作提供了使用光谱控制进行太空飞行的放射性同位素热光电系统（RTPV）的设计方法。重点是通过使用二维微图案化光子晶体发射器，选择合适的热光电电池和绝缘材料以排除材料不兼容，通过阻抗匹配来优化系统效率以及设计最小质量的辐射器的实际系统的可行性。在最后一部分中，给出了一个基于经过测试的砷化铟镓镓锑（InGaAsSb）电池的设计实例。计算表明，在使用经过实验测试的InGaAsSb电池中，RTPV发生器的效率有望达到8.6％，比功率为$10.1\mathrm{w\; ^}/\mathrm{公斤}$与先进的散热器。使用效率更高的InGaAs电池，该系统有望使放射性同位素热电发生器的性能提高三倍，有望达到$〜\mathrm{18岁}％$ 和 $21\mathrm{w\; ^}/\mathrm{公斤}$， 分别。使用高性能的设备，这项工作的结果可以得出功能原型，以进一步研究可制造性和可靠性。