Subdivision Error Analysis and Compensation for Photoelectric Angle Encoder in a Telescope Control System

Table 1

The features of subdivision errors.

Number	Subdivision error type		Error can be neglected or not
1	DC	1	No
2	Amplitude		No
3	Harmonic		No
4	Electrical noise	1	Yes
5	Quantization	1	Yes
6	Phase		No

Note: means period of , while means period of subdivision signals and .