We know that the Ultrasonic sensors can't accurately measure the distance to an object that
- is more than 3 meters away (the distance may vary on brands)
- has it's reflective surface at a shallow angle (the angle may vary on brands)
- is too small to reflect enough sound
Also the environmental influences such as air tempereture, air pressure, air currents, humidity, mist and types of gas cause inaccurate measurements. Which sensor should i use to get the best measurements ?