O'ZBЕKISTON RESPUBLIKASI RAQAMLI TEXNOLOGIYALAR VAZIRLIGI
MUHAMMAD AL-XORAZMIY NOMIDAGI
TOSHKЕNT AXBOROT TЕXNOLOGIYALARI UNIVЕRSITETI
Signallar va tasvirlarga ishlov berish
1- amaliy ish topshirig’i
Bajardi: Toshtemirov Samandar
Tekshirdi: Xoldorov Shohruhmirzo
TOSHKENT 2023
Topshiriq: Matlab paketida signallarga raqamli ishlov berish
Berilgan funktsiyalardan variant tanlanib, olingan variantlar ustida quyidagi amallar bajariladi:
2 ta funktsiya svyortka qilinadi
2 ta funktsiya korrelyatsiya qilinadi
Olingan natijalar va dastlabki natijalar bilan birgalikda grafik orqali ifodalanadi.
Variantlar
Amaliy qism:
Kod:
import numpy
import math
import matplotlib.pyplot as plt
def y_1(x):
return x**2 + 2*x*y + 3*(y**2)
def y_2(x):
return numpy.cos(x) - numpy.sin(x)
x = numpy.arange(-3, 3, 0.01)
y = 2
y1 = [y_1(i) for i in x]
y2 = [y_2(i) for i in x]
y3 = numpy.convolve(y1, y2, mode='same')
fig = plt.figure(figsize=(8, 8))
plt.subplot(221)
plt.plot(x, y1)
plt.title('Y1')
plt.subplot(222)
plt.plot(x, y2)
plt.title('Y2')
plt.subplot(223)
plt.plot(x, y1)
plt.plot(x, y2)
plt.title('Y1 va Y2')
plt.subplot(224)
plt.plot(x, y3)
plt.title('conv(Y1, Y2)')
plt.show()
y1_u = numpy.mean(y1)
y2_u = numpy.mean(y2)
y3_u = numpy.mean(y3)
s1, s2, s3, s4, s5 = 0, 0, 0, 0, 0
for i in range(len(y1)):
s1+= (y1[i] - y1_u) * (y3[i] - y3_u)
s2+= (y1[i] - y1_u)**2
s4+= (y2[i] - y2_u) * (y3[i] - y3_u)
s5+= (y2[i] - y2_u)**2
s3+= (y3[i] - y3_u)**2
r1 = s1/numpy.sqrt(s2*s3)*100
r2 = s4/numpy.sqrt(s5*s3)*100
print(r1)
print(r2)
|
