Abstract

During the commission observing phase of LAMOST (Guoshoujing Telescope), millions of spectra have been gained and reduced. As a part of LAMOST spectral analysis software, 1D-pipeline is available for the determination of spectral classification, redshift (radial velocity) and fundamental stellar atmospheric parameters. Over 1000 stellar spectra were adopted to calibrate the accuracy of spectral classification and radial velocity (RV) measurement. Influences from low SNR and bad fluxcalibration lead to undesirable accuracy. According to several criteria, we can discriminate most of wrong results. Comparing with the already known objects from SDSS, we can determine the zero-point of our RV and calibrate the accuracy of measurement.