172329 ⎘
Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves; Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically using horizon sensors
SOLAR ACCESS MEASUREMENT
#2Solar access measurement
#3Apparatus, methodologies and software applications for determining a level of direct sunlight
#4Solar access measurement
#5Methods for solar access measurement
#6Solar access measurement device
#7Solar access measurement device