射线声学理论中的水下正负两种声速梯度时收发换能器合置接收的程序，-Underwater acoustic ray theory both positive and negative velocity gradient transducers when the transceiver set to receive combined procedures,

本代码是对论文《Analysis of Cognitive Radio Networks with Imperfect Sensing》的仿真实现-This code is the thesis " Analysis of Cognitive Radio Networks with Imperfect de Corriente Flux-Gate Transducers simulation

Mathematic model of acoustic field for ultrasonic transducers according to "Ultrasonic beam structures in fluid media" paper