Fig. 1. Experimental setup for the longitudinal phase measurement

Fig. 2. Reflection evaluation of different bandwidth in single bunch mode

Fig. 3. Construction of the response function

Fig. 4. Four groups of matching data in LUT

Fig. 5. Correlation between measured data and LUT matching data

Fig. 6. Normal filling pattern of SSRF operation

Fig. 7. Bunch-by-bunch phase and turn-by-turn phase of one bunch

Fig. 8. Singular value distribution after singular value decomposition （SVD） and temporal vector distribution of mode 1

Fig. 9. Dependence between bunch phase resolution and charge