Beidou navigation satellite system (BDS) can provide regional services at present.Its ground segments are mostly within ......

基于经验模态分解(EMD),提出了一种改进的永久散射体(PS)探测方法。对干涉图进行多尺度分解,基于梯度的自适应滤波对分解的本征模......

We present eleven interesting problems in probability along with their solutions. These problems can be used as challeng......