invariance method

基本解释

ESPRIT is a signal parameter estimation method using rotational invariance approaches, which is a subspace decomposing technique.
ESPRIT算法是一种用信号旋转不变性来估计信号参数的方法，属于子空间分解技术。
Basing on the signal space model, the harmonics in power system was detected by combining the subspace rotational invariance and least squares method.
该方法以信号空间模型为基础，结合子空间旋转不变性和最小二乘法实现了电力系统的谐波检测。
journal.ecust.edu.cn
Experimental results show that this method achieves the same accurate level as classic fast Fourier transform (FFT) based method with invariance to illumination change and lower computation costs.
实验结果表明该算法相对传统基于快速傅立叶变换法具有同等精度、抗光照变化及计算量少的特点。