A series of Eu³⁺or Tb³⁺doped Ba₂Ca(BO₃)₂phosphors were synthesized by a high temperature solid state method, and the luminescence properties are investigated. Ba₂Ca(BO₃)₂:Tb³⁺can show an obvious green emission, and the peak locates at 551 nm, which corresponds to the ⁵D₄→⁷F₅transition of Tb³⁺. Ba₂Ca(BO₃)₂:Eu³⁺can present the characteristic emission of Eu³⁺, and the peak locates at 600 nm, which is ascribed to the 5D0→7F2 transition of Eu3+. In order to achieve the emission-tunable phosphors, the Eu³⁺/Tb³⁺co-doped Ba₂Ca(BO₃)₂are synthesized. When tuning the Eu³⁺or Tb³⁺concentration, Ba₂Ca(BO₃)₂:Eu³⁺, Tb³⁺can both show the tunable emission, which may be induced by the energy transfer from Tb³⁺to Eu³⁺.

为利用高速无线通信时信道的稀疏多径传播特性, 改善传统单载波分块传输(SCBT)信道估计方法的性能, 提出了一种阈值判决引导的稀疏信道估计方法。该方法通过导频进行初始最小二乘信道估计, 利用获取的信道估计值设置判决阈值。然后, 将幅值低于判决阈值的信道抽头强制置零, 仅保留幅度值大于判决阈值的信道抽头估计值, 从而有效地改善单载波分块传输系统的稀疏信道估计性能。基于COST 207典型乡村信道模型进行了仿真实验, 结果表明: 阈值判决引导的稀疏信道估计方法的实验结果最接近于信道参数已知时的误比特率性能; 在信噪比为20 dB条件下, 新方法的误比特率可达到5×10-4, 而最小二乘算法只能达到3×10-2。该方法改善了SCBT系统的稀疏信道估计精度与复杂度, 得到的结果验证了提出方法的有效性。

分析了振动对光电设备的影响，针对光电设备中光学装置的减振设计，提出了三维减振设计构想。设计了一套既有隔振缓冲能力，同时也具备抑制角振动功能的三维减振系统。对三维减振系统的抗振动设计和抗冲击设计进行了分析计算，并通过台架试验验证了减振特性，能够满足光电设备的使用要求。