2026-10-11T03:37:13Z https://www.scidb.cn/oai

10.57760/sciencedb.07349 2023-02-14T10:47:26Z

2023-02-14 Batch measurement and calibration method of DSRT three-axis low frequency antenna pointing error doi:10.57760/sciencedb.07349 en The data is generated by matab software. Figure 2 shows antenna scanning track and solar track; Antenna scanning track: X axis is Time.mat; Y axis is Ant_ ace_ dec.mat； Z axis is Ant_ dec_ dec.mat; Sun track: X axis is Time.mat; The Y axis is hour_ angle.mat； Z axis is DECs.mat; Figure 4 shows the measured pattern and Gaussian fitting pattern of DSRT antenna. Measured direction chart, x-axis is x_ mesh_ clean_ odd； The y-axis is y_ mesh_ clean_ odd； The z-axis is z_ mesh_ clean_ odd； The Gaussian fitting diagram is, and the x-axis is x_ mesh_ clean_ odd； The y-axis is y_ mesh_ clean_ odd； Z axis is zz_ mesh_ clean_ odd； Figure 5 shows the dual-line polarization channel pattern of DSRT antenna. The x-axis in the left figure is x_ mesh_ clean_ odd； The y-axis is y_ mesh_ clean_ odd； The z-axis is z_ mesh_ clean_ odd； Measured point diagram, x-axis is delta_ rac_ odd； The y-axis is delta_ dec_ odd； The z-axis is Amp_ data_ odd； The x-axis in the right figure is x_ mesh_ clean_ even； The y-axis is y_ mesh_ clean_ even； The z-axis is z_ mesh_ clean_ even； Measured point diagram, x-axis is delta_ rac_ even； The y-axis is delta_ dec_ even； The z-axis is Amp_ data_ even； Figure 6 is a two-dimensional Gaussian fitting pattern. The x-axis is x_ mesh_ clean_ odd_ 709； The y-axis is y_ mesh_ clean_ odd_ 709； The z-axis is z_ mesh_ clean_ odd_ 709； Figure 7 shows the corrected two-dimensional Gaussian fitting diagram. The x-axis is x_ mesh_ clean_ odd_ 1300； The y-axis is y_ mesh_ clean_ odd_ 1300； The z-axis is z_ mesh_ clean_ odd_ 1300； Figure 8 and Figure 9 Antenna pointing error diagram. Curve 1: the x-axis is rac_ point_ fit_ 1110_ rawdata； The y-axis is delta_ t_ fit_ 1110_ rawdata； Curve 2: the x-axis is rac_ point_ fit_ 1110_ rawdata； The y-axis is delta_ d_ fit_ 1110_ rawdata； Curve 3: the x-axis is rac_ point_ fit_ 1205_ rawdata； The y-axis is delta_ t_ fit_ 1205_ rawdata； Curve 4: the x-axis is rac_ point_ fit_ 1205_ rawdata； The y-axis is delta_ d_ fit_ 1205_ rawdata； Figure 10 shows the root mean square of pointing error; Histogram 1: the y-axis is rac_ rms_ 1110_ raw; And rac_ rms_ 1205_ raw Histogram II: y-axis is dec_ rms_ 1110_ raw; And dec_ rms_ 1205_ raw  power pattern; antenna scanning track ; antenna pointing error Tulpar PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank