Method of Tower-less Calibration for Phase Parameter of Tracking System

This paper introduced the principle of angle errors in tracking system. The demodulation was only related to signal envelop, and supported the phase calibration of radio star. And this paper which is combined with the commonly-used phase calibration methods, carried out the phase calibration of radio star and the satellite on the specific device, summarized the procedure of radio star for phase calibration and compared the accuracy of it. On the basis of analyzing the theory of phase calibration, the authors concluded the relationship between the parameter of phase calibration and the working frequency. Through utilizing the results of satellite phase calibration to verification and the results of phase calibration of radio star on full-band, and achieving the parameter of phase calibration without the calibration tower, it has a good engineering practice value

Method of Tower-less Calibration for Phase Parameter of Tracking System

This paper introduced the principle of angle errors in tracking system. The demodulation was only related to signal envelop, and supported the phase calibration of radio star. And this paper which is combined with the commonly-used phase calibration methods, carried out the phase calibration of radio star and the satellite on the specific device, summarized the procedure of radio star for phase calibration and compared the accuracy of it. On the basis of analyzing the theory of phase calibration, the authors concluded the relationship between the parameter of phase calibration and the working frequency. Through utilizing the results of satellite phase calibration to verification and the results of phase calibration of radio star on full-band, and achieving the parameter of phase calibration without the calibration tower, it has a good engineering practice value

Six New Species of Leucoagaricus (Agaricaceae) from Northeastern China

Six new species, Leucoagaricus albosquamosus, Leucoagaricus atroviridis, Leucoagaricus aurantioruber, Leucoagaricus candidus, Leucoagaricus centricastaneus and Leucoagaricus virens, collected from northeastern China are described based on morphological characters and molecular evidence. Illustrations of fresh basidiomata and line drawings of key anatomical characters are provided. A phylogenetic tree inferred from internal transcribed spacer (ITS) region and large subunit ribosomal RNA gene (LSU) sequences shows that three of the new taxa are nested within the section Leucoagaricus and two of the new taxa are in the subgenus Sericeomyces, whereas the other new taxus is clustered with Leucoagaricus viriditinctus and Leucoagaricus irinellus, forming a clade that does not fit in any known section

Six New Species of <i>Leucoagaricus</i> (Agaricaceae) from Northeastern China

Six new species, Leucoagaricus albosquamosus, Leucoagaricus atroviridis, Leucoagaricus aurantioruber, Leucoagaricus candidus, Leucoagaricus centricastaneus and Leucoagaricus virens, collected from northeastern China are described based on morphological characters and molecular evidence. Illustrations of fresh basidiomata and line drawings of key anatomical characters are provided. A phylogenetic tree inferred from internal transcribed spacer (ITS) region and large subunit ribosomal RNA gene (LSU) sequences shows that three of the new taxa are nested within the section Leucoagaricus and two of the new taxa are in the subgenus Sericeomyces, whereas the other new taxus is clustered with Leucoagaricus viriditinctus and Leucoagaricus irinellus, forming a clade that does not fit in any known section