[translate] a工厂的面积是500000平方米 The factory area is 500000 square meters [translate] a•TOEFL (iBT overall): 61 •IELTS (overall band score): 6.5 [translate] a•Cambridge GCSE, O Level or higher (English): Complete with a “C” or better. [translate] ...
2. Mathematical Model of Square Ultrasonic Array 2.1. Mathematical Model of Array Signal Processing When the estimation of the DOA of the ultrasonic signals generated by a PD source is conducted based on signal sparse decomposition theory, the first step is to build a mathematical model of the ...