from scipy import signal
    import scipy.linalg as la
    import numpy as np
    import matplotlib.pyplot as plt
    from scipy.fftpack import fft
    import serial
    from time import sleep
    from scipy.linalg import hankel

    class Radar(object):
        def __init__(self):
            self.Fs = 0

        def setupSerial(self,port, N):
            port = port
            Nn = N
            n = N
            N = n * 2
            x = [0 for h in range(0, N)]
            radarData = [0 for h in range(0, n)]
            timeData = [0 for h in range(0, n)]
            ser = serial.Serial(port, 9600)
            sleep(2)

            if (input("Do you want to start communication?") == 'y'):

                print("Ok Im Starting Serial COmmunicatiton")
                if (ser.is_open):
                    sleep(3)
                    for i in range(0, N):
                        ser.write(b"a")
                        x[i] = ser.readline()
                        print(x[i])
                else:
                    print("Serial port is not open")
                    self.setupSerial(port,N)

            samples = 0;
            samples1 = 0;
            for i in range(0, N):
                if (i % 2 == 0):
                    radarData[samples] = float(str(x[i], 'utf-8')) * 5.0 / 1023.0
                    samples = samples + 1
                else:
                    timeData[samples1] = float(str(x[i], 'utf-8'))
                    samples1 = samples1 + 1

            self.radar = np.asarray(radarData)
            self.time = np.asarray(timeData)

            self.samplingRate = 10 ** 6 / np.mean(np.diff(self.time))

            ser.close()

            return self.samplingRate, self.radar, self.time


        def getVariables(self):
            return self.samplingRate, self.radar,self.time
    if __name__ == '__main__':

        radar = Radar()
        radar.setupSerial(port='COM3',N=2500)
        fs,radar,time = radar.getVariables()
        print(fs, len(radar), len(time))

        print('Process took: ')
        print(time[len(time) - 1])
        plt.plot(time,radar)
        plt.show()

    ArduinoCode:
        void setup()
        {
          Serial.begin(9600);
          pinMode(A0,INPUT);
        }

        void loop()
        {
          if(Serial.available() > 0)
          {
            if(((char) Serial.read()) == 'a')
            {
              Serial.println(analogRead(A0));
              Serial.println(micros());
            }
          }
        }