Abstract: As the development of ship automation,traditional mechanical measurement devices for transverse and longitudinal attitude estimation could not meet the new requirements.The paper proposed a schematic design with a new method of digital measurement system,which collecting the angle information with the rotating transformer,then achieving ADC by RDC-19222 chips.The vertical and horizontal angle information was displayed in real-time under control of the MCU.The results show that the system is stable,accurate,and of high practical value.