code: def get_radar(dt):
      """Simulate radar range to object at 1K altidue and moving at 100m/s.
      Adds about 5% measurement noise. Returns slant range to the object.
      Call once for each new measurement at dt time from last call.
      """
  
      if not hasattr(get_radar, "posp"):
          get_radar.posp = 0
  
      vel = 100 + 0.5 * randn()
      alt = 1000 + 10 * randn()
      pos = get_radar.posp + vel * dt
  
      v = 0 + pos * 0.05 * randn()
      slant_range = math.sqrt(pos**2 + alt**2) + v
      get_radar.posp = pos
  
      return slant_range
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_radar(dt) and returns: slant_range