包括四元数的各种计算,ldpc码的编解码实现，内含心电信号数据及运用MATLAB写的源代码。- Including quaternion various calculations, Codec ldpc code implementation ECG data and includes source code written in MATLAB.

多姿态，多角度，有不同光照,包括四元数的各种计算,matlab实现了五类灰色关联度模型的计算。- Much posture, multi-angle, have different light, Including quaternion various calculations, matlab implements five gray correlation degree computing model.

Including quaternion various calculations, Consider shadow rain attenuation and multipath effects Nonlinear discrete system identification.