We describe the complete mitochondrial genome of a small-scaled forest agamid （Pseudocalotes microlepis）, which is 17 873 bp in size, containing 13 PCGs, 2 rRNAs, 22 tRNAs and non-coding regions. The mitogenome has ...We describe the complete mitochondrial genome of a small-scaled forest agamid （Pseudocalotes microlepis）, which is 17 873 bp in size, containing 13 PCGs, 2 rRNAs, 22 tRNAs and non-coding regions. The mitogenome has a typical gene order among squamates. 13 PCGs include 2 start codons （ATG and ATA）, 3 stop codons （TAG, TAA and AGG）, and an incomplete stop codon （T-）. Codon usage analyses showed that CUA-Leul and CGG-Arg are the most frequently and rarely used codon, respectively. All 22 tRNAs were predicted to form canonical cloverleaf secondary structures, except for two tRNAs （tRNAcys and tRNASer （AGY）） lacking the dihydorouridine （DHU） arm. The large non- coding region （control region） is 2 687 bp long （28.3% T, 18.2% C, 42.3% A, and 11.2% G）, with four different types of repeating sequences. The phylogenetic tree resulting from BEAST analyses based on concatenated 2 rRNAs and 13 PCGs in sequence revealed that the newly sequenced P. microlepis, where the genus Acanthosaura were aggregated. Together with Calotes versicolor, they constitute the subfamily Draconinae.展开更多
An interference mitigation for acquisition method,based on both energy center and spectrum symmetry detection,has been proposed as a possible solution to the problem of signal acquisition susceptibility to continuous-...An interference mitigation for acquisition method,based on both energy center and spectrum symmetry detection,has been proposed as a possible solution to the problem of signal acquisition susceptibility to continuous-wave interference(CWI)in unified carrier telemetry,tracking,and command(TT&C)systems.With subcarrier modulation index as a priori condition,the existence of CWI is determined by comparing the energy center with the symmetric center.In the presence of interference,the interference frequency point is assumed and culled;sequentially,the spectral symmetry is used to verify whether the signal acquisition is realized.Theoretical analysis,simulations,and experimental results demonstrate that the method can realize the acquisition of the main carrier target signal with an interference-to-signal ratio of 31 dB,which represents an improvement over the existing continuous-wave interference mitigation for acquisition methods.展开更多
基金provided by grant from Zhejiang Provincial Natural Science Foundation to Longhui LIN (LY17C030003)grants from the National Natural Science Foundation of China (31270571 and 31670422)
文摘We describe the complete mitochondrial genome of a small-scaled forest agamid （Pseudocalotes microlepis）, which is 17 873 bp in size, containing 13 PCGs, 2 rRNAs, 22 tRNAs and non-coding regions. The mitogenome has a typical gene order among squamates. 13 PCGs include 2 start codons （ATG and ATA）, 3 stop codons （TAG, TAA and AGG）, and an incomplete stop codon （T-）. Codon usage analyses showed that CUA-Leul and CGG-Arg are the most frequently and rarely used codon, respectively. All 22 tRNAs were predicted to form canonical cloverleaf secondary structures, except for two tRNAs （tRNAcys and tRNASer （AGY）） lacking the dihydorouridine （DHU） arm. The large non- coding region （control region） is 2 687 bp long （28.3% T, 18.2% C, 42.3% A, and 11.2% G）, with four different types of repeating sequences. The phylogenetic tree resulting from BEAST analyses based on concatenated 2 rRNAs and 13 PCGs in sequence revealed that the newly sequenced P. microlepis, where the genus Acanthosaura were aggregated. Together with Calotes versicolor, they constitute the subfamily Draconinae.
基金Supported by the National Natural Science Foundation of China(61401026)
文摘An interference mitigation for acquisition method,based on both energy center and spectrum symmetry detection,has been proposed as a possible solution to the problem of signal acquisition susceptibility to continuous-wave interference(CWI)in unified carrier telemetry,tracking,and command(TT&C)systems.With subcarrier modulation index as a priori condition,the existence of CWI is determined by comparing the energy center with the symmetric center.In the presence of interference,the interference frequency point is assumed and culled;sequentially,the spectral symmetry is used to verify whether the signal acquisition is realized.Theoretical analysis,simulations,and experimental results demonstrate that the method can realize the acquisition of the main carrier target signal with an interference-to-signal ratio of 31 dB,which represents an improvement over the existing continuous-wave interference mitigation for acquisition methods.
