南方NGS200应用实践中的若干问题

对南方NGS200在工程控制测量领域应用实践中的一些问题作了阐述，提出了一些见解和措施。     

Phytoplankton diversity in a tropical bay,North Borneo,Malaysia as revealed by light microscopy and Next-Generation Sequencing

Assessments of phytoplankton diversity in Sabah waters, North Borneo, have primarily relied on morphology-based identification, which has inherent biases and can be time-consuming. Next-Generation Sequencing (NGS) technology has been shown to be capable of overcoming several limitations of morphology-based methods. Samples were collected from the Sepanggar Bay over the course of the year 2018 in different monsoon seasons. Morphology-based identification and NGS sequencing of the V8–V9 region of the 18S LSU rDNA were used to investigate the diversity of the phytoplankton community. Microscopy and NGS showed complementary results with more diatom taxa detected by microscopy whereas NGS detected smaller and rarer taxa. The harmful algal genera in the study site comprised of Skeletonema, Margalefidinium, Pyrodinium, Takayama, and Alexandrium as detected by NGS. This study showed that that an integrative approach of both morphological and molecular techniques could provide more comprehensive information about the phytoplankton community as the approach captured quantitative variability as well as the diversity of phytoplankton species.     

GNSS测量中天线相位中心偏差的影响及处理方法

通过GNSS天线相位中心偏差差值实验,对不同天线类型、不同机构的天线相位中心偏差进行组合,通过对数据比较分析,采用统一机构的天线相位中心偏差参数可有效降低天线相位中心偏差对GNSS点位精度的影响.     

Trimble数据处理软件中自定义天线的设置

以Leica LEIAS10天线相位中心改正模型的建立为例,叙述了在Trimble数据处理软件中建立自定义天线模型所需的数据来源,自定义天线建立的流程与方法;对其建立过程中涉及到的Receivers.ini与Antenna.ini文件修改,相对相位改正模型与绝对相位改正模型文件的建立进行了重点说明,并结合实际工程案例进...     

昆明站流动VLBI观测数据处理初步结果

对我国自行研制的流动VLBI首次长距离观测数据进行处理 ,得到了初步结果 ,并对流动VLBI今后的观测提出了一些建议。