Design and development of the transmitter of No-Dig navigating instrument

The measure theories and methods of tilt angle and face angle are introduced combining with the composing principle and design of the transmitter of No-Dig navigating instrument.For tilt angle,the single axes accelerate sensor is used and put emphasized on the method that remove the install error;for face angle,the photo electricity face sensor designed by ourselves is adopted.Through the skilled using and innovated research,the measured parameters can meet the need of underground operations.