项目将依托中方主导的LCT亚毫米望远镜，在继承LCT已有的单波束接收机技术基础上，开展亚毫米波多波束接收机关键技术研究及接收机系统研制，使LCT能够满足大天区、高分辨率和高灵敏度的巡天观测要求。预期项目将实现345 GHz频段氮化铌基超导SIS混频器，射频带宽达到40 GHz，中频带宽达到4 GHz，噪声温度优于50 K；对多波束超导接收机的关键技术进行系统研究，实现3×3阵列超导SIS混频器原型机研制。本项目将为挖掘和扩充LCT望远镜的探测能力打下关键技术基础，为我国亚毫米波天文探测技术开发提供验证平台，也为我国亚毫米波天文提供实训基地和进行人才储备。

The project proposes the research on the crucial techniques of the Sub-millimeter (Sub-mm) multi-beam receiver and its system development based on the inherent single-beam receiver of LCT telescope which is dominated by Shanghai Normal University now. The insightful research including Focal Plane Arrays (FPA) and heterodyne superconducting SIS mixer arrays enables the requirements of large-zone, high-resolution and high-sensitivity in sky survey. In details, the projects demonstrate a 345 GHz NbN based SIS mixer with 20 GHz RF bandwidth, 4 GHz IF bandwidth, and a measured receiver noise temperature lower than 50 K; The 3×3 SIS mixer arrays are expected to be fabricated in order to obtain insightful understanding and experimental support of the multi-beam receivers for the LCT telescope. We expect that the project plays a key role on the exploration of the multi-beam receiver for LCT telescope, and thereby helps the future upgrade and expansion of the LCT capabilities; Moreover, with the LCT telescope the project offers a validation platform for the astronomical Sub-mm technologies developed in China and a training base for the South Pole strategic project of Sub-mm technologies.