GPS Satellite Sky View

import matplotlib.pyplot as plt
import numpy as np

np.random.seed(999)

# GPS satellite visibility
n_sats = 12
azimuth = np.random.uniform(0, 2*np.pi, n_sats)
elevation = np.random.uniform(15, 85, n_sats)
signal_strength = 30 + 15 * np.sin(elevation * np.pi / 180) + np.random.normal(0, 3, n_sats)

x = np.cos(azimuth) * (90 - elevation) / 90
y = np.sin(azimuth) * (90 - elevation) / 90
z = signal_strength / 50

fig = plt.figure(figsize=(10, 8), facecolor='#ffffff')
ax = fig.add_subplot(111, projection='3d', facecolor='#ffffff')

markerline, stemlines, baseline = ax.stem(x, y, z, linefmt='-', markerfmt='o', basefmt=' ')
plt.setp(stemlines, color='#0ea5e9', linewidth=2, alpha=0.7)
plt.setp(markerline, color='#38bdf8', markersize=10)

ax.set_xlabel('East-West', color='#1f2937', fontsize=10)
ax.set_ylabel('North-South', color='#1f2937', fontsize=10)
ax.set_zlabel('Signal (C/N0)', color='#1f2937', fontsize=10)
ax.set_title('GPS Satellite Sky View', color='#1f2937', fontsize=14, fontweight='bold', pad=20)

ax.tick_params(colors='#6b7280', labelsize=8)
ax.xaxis.pane.fill = False
ax.yaxis.pane.fill = False
ax.zaxis.pane.fill = False
ax.xaxis.pane.set_edgecolor('#e5e7eb')
ax.yaxis.pane.set_edgecolor('#e5e7eb')
ax.zaxis.pane.set_edgecolor('#e5e7eb')

ax.view_init(elev=35, azim=45)
plt.tight_layout()
plt.show()