Satellite-to-satellite laser communication.
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中国航天科工
【星间激光通信载荷批量采购线上签约 “行云工程”β阶段12颗卫星建设正式启动】近日,航天行云科技有限公司与北京遥测技术研究所、哈尔滨工业大学(威海)两家单位举行了线上签约仪式,就批量采购星间激光通信载荷签署了合作协议。这标志着“行云工程”β阶段研制、生产、发射、运营及应用12颗卫星的序幕已经拉开。
本次招标是国内同行业首次针对星上激光通信载荷的公开批量招标。今年4月20日,“行云工程”星间激光通信载荷研制项目挂网公开招标,计划一次性采购12套星间激光通信载荷。5月20日,北京遥测技术研究所、哈尔滨工业大学(威海)两家单位从多名竞争对手中脱颖而出,成功中标。
太空中,卫星之间的通信通常采用无线电波,存在传输容量受限、信号受到干扰、频率资源不足等突出问题,卫星之间采用激光通信,具有传输速度快、传输容量大、不用申请频率、减少地面基站等突出优点,更能满足用户的通信需求。目前,“行云工程”在国内低轨星座中唯一采用了星间激光通信技术,代表了当前低轨卫星通信技术的先进性及发展方向。
“行云二号”01、02星自今年5月12日成功发射入轨后,随即开展了平台及载荷状态测试、星地通信测试、通信业务流程测试等多项核心技术测试,目前已完成的测试项目完全符合设计预期,系统表现优秀,为“行云工程”按计划稳步推进β阶段建设奠定了良好基础。
Google Translation:
China Aerospace Science and Industry
[The inter-satellite laser communication payload contract signed at an online ceremony. The "Xingyun Project" beta phase 12 satellite construction officially launched] Recently, the aerospace Xingyun Technology Co., Ltd., Beijing Telemetry Technology Institute, Harbin Institute of Technology (Weihai) held two units At the online signing ceremony, a cooperation agreement was signed on the bulk purchase of interstellar laser communication payloads. This marks the beginning of the 12 phases of development, production, launch, operation and application of the "Xingyun Project" beta phase.
This bidding is the first public batch bidding for on-board laser communication payload in the same industry in China. On April 20 this year, the "Xingyun Project" inter-satellite laser communication load development project was open for public bidding. It planned to purchase 12 sets of inter-satellite laser communication loads at one time. On May 20, the Beijing Institute of Telemetry Technology and Harbin Institute of Technology (Weihai) stood out from many competitors and won the bid.
In space, the communication between satellites usually uses radio waves, which have prominent problems such as limited transmission capacity, signal interference, and insufficient frequency resources. The use of laser communication between satellites has fast transmission speed, large transmission capacity, no application frequency, Reducing outstanding advantages such as ground base stations can better meet users' communication needs. At present, the "Xingyun Project" is the only one adopting inter-satellite laser communication technology in the domestic low-orbit constellation, which represents the advanced nature and development direction of the current low-orbit satellite communication technology.
Since the successful launch of the "Xingyun 2" 01 and 02 stars into orbit on May 12, this year, it has carried out a number of core technical tests such as platform and load status tests, satellite-ground communication tests, and communication business process tests. The test project of the company completely meets the design expectations and the system performance is excellent, which lays a good foundation for the "Xingyun Project" to steadily advance the construction of the beta stage as planned.