原有移动物联网技术课程实验项目知识点关联度不够、缺少对系统开发全局认知。为便于学生构建移动物联型系统开发架构，针对课程基础实验创设移动物联型智能垃圾分类系统应用场景，设计基于Android开发环境的移动端垃圾分类属性数据库，培养学生移动端数据库设计与开发能力；通过Wi-Fi ESP8266设计移动端与垃圾分类终端C/S网络结构，培养学生系统组网设计能力；通过Socket技术设计移动端与垃圾分类终端数据交互控制程序，从而完成移动端对垃圾分类终端的状态监测与智能控制，培养学生异构平台间Socket通信技术编程能力。该系统调试方便、移植性强，使学生对移动物联型系统架构理解更深入，可在不同场景下做移动物联型系统开发。

卫星互联网的快速发展，使得带宽及频谱资源的紧缺问题日益凸显。卫星激光通信大带宽及无频谱约束的特点，使其成为缓解射频资源紧张和提升通信带宽的有效手段。文章通过对国内外卫星激光通信发展的调研，总结出该领域未来的技术发展趋势，同时针对所涉及的网络重构和高效编码等关键技术进行了设计与仿真验证，为我国卫星激光通信的研究提供了理论与技术参考。

Optical fiber sensor network has attracted considerable research interests for geoscience applications. However, the sensor capacity and ultra-low frequency noise limits the sensing performance for geoscience data acquisition. To achieve a high-resolution and lager sensing capacity, a strain sensor network is proposed based on phase-sensitive optical time domain reflectometer (φ-OTDR) technology and special packaged fiber with scatter enhanced points (SEPs) array. Specifically, an extra identical fiber with SEPs array which is free of strain is used as the reference fiber, for compensating the ultra-low frequency noise in the φ-OTDR system induced by laser source frequency shift and environment temperature change. Moreover, a hysteresis operator based least square support vector machine (LS-SVM) model is introduced to reduce the compensation residual error generated from the thermal hysteresis nonlinearity between the sensing fiber and reference fiber. In the experiment, the strain sensor network possesses a sensing capacity with 55 sensor elements. The phase bias drift with frequency below 0.1 Hz is effectively compensated by LS-SVM based hysteresis model, and the signal to noise ratio (SNR) of a strain vibration at 0.01 Hz greatly increases by 24 dB compared to that of the sensing fiber for direct compensation. The proposed strain sensor network proves a high dynamic resolution of 10.5 pε·Hz^-1/2 above 10 Hz, and ultra-low frequency sensing resolution of 166 pε at 0.001 Hz. It is the first reported a large sensing capacity strain sensor network with sub-nε sensing resolution in mHz frequency range, to the best of our knowledge.

为提高光学天线能量利用效率，实现空间激光通信组网，本文对反射镜联动跟踪控制技术展开研究。首先，阐述了系统组成原理，详细论述了基于单探测器多执行器的反射镜联动跟踪控制策略。接着，通过分析激光链路能量，得到了联动跟踪约束条件及误差要求。然后，建立了双反射镜联动跟踪数学模型，对伺服控制器进行仿真。最后，搭建原理样机对跟踪性能进行测试。实验结果表明，系统能够对目标进行稳定跟踪，跟踪脱靶量精度优于83 μrad，双镜联动精度优于26 μrad，系统接收光功率显著提高。本文研究为实现空间一对多激光通信链路组网奠定了基础。