High precision scanning system and test technology of remote sensor

Reliability of scanning system is more important for scanning remote sensor. The sensor also has a higher request for angle measuring precision, control precision and non-linearity as the raise of resolution and S/N. A new high reliability and precision scanning system are designed. Choosing for shafting, motor and angle measuring sensor, scanning control circuit design and control scheme are introduced. High precision system needs high precision test system, a high precision non-contact test system is introduced finally. The result of test shows that angle measuring precision is smaller than 1arcsecond and non-linearity is less than 0.5%.