星载天线反射器形面主动控制研究现状与展望

星载天线是卫星系统的重要载荷,在远距离微波遥感、深空探测、军事侦查以及通信等领域起着决定性作用.随着天线频率和增益需求的不断提高,大口径、高精度成为星载天线主要发展方向.传统被动方法难以保证反射器在轨形面精度,而主动控制技术正成为解决这一问题的重要选择.介绍了天线反射器形面主动控制技术相关研究工作的进展,内容涉及形面主...

Research progresses and prospect of active shape control for space-borne antenna reflectors

The space-borne antenna is an important payload of the satellite system, and plays a decisive function in the field of microwave remote sensing, deep space exploration, military reconnaissance, and military communication. Large-aperture and high-precision have become the main development directions of space-borne antennas with the increasing demands for antenna frequency and gain. Traditional passive methods are difficult to guarantee the shape precision of the reflector on orbit, and the active shape control technology is becoming an important selection to solve the problem. The research progress of active shape control technology for antenna reflectors is introduced. The contents include active shape control schemes, actuator technologies, active shape control methods,high-precision deformation measurement ways, and experimental systems of active shape control. Key technologies of active shape control for space-borne antennas are analyzed and summarized, and the development is prospected. With the rapid progress of advanced manufacturing technology, such as precision manufacturing, additive manufacturing 3D-printing technology, more methods and solutions can be used for the fabrication for the feed chain. For advanced manufacturing technology, the design of feed chain needs the new development and structure configuration, the paper gives the possible solutions for this point, which can help pushing the application of advanced manufacturing technology in the space manufacturing region.