Using ELLS-1/2 radar satellite data, we generated a Digital Elevation Model by Interferometric Synthetic Aperture Radar, and the ERS-1/2 DEM that we generated is obviously superior to both the 1/25 ten thousand-scale ...Using ELLS-1/2 radar satellite data, we generated a Digital Elevation Model by Interferometric Synthetic Aperture Radar, and the ERS-1/2 DEM that we generated is obviously superior to both the 1/25 ten thousand-scale DEM of the National Fundamental Geographic Information System of China and the 90-m spatial resolution＇s SRTM DEM that America published in 2004 when it showed the characteristics of tiny structure relief. By analyzing the relief characteristics of the Bengcuo fault zone based on ERS-1/2 DEM, we find that the relief on the connection location of the Bengcuo and Pengcuo fault zones has complex characteristics. A structure relief that is similar to the Pengcuo fault zone crosses through the Dazi-Dasha fault on the the Bengcuo fault zone, while the Dazi-Dasha fault crosses through a gully at this place. This indicates that the Dazi-Dasha fault has been active at this place recently. At the same time, the Naka-Naduiduo fault is severed by the gully which was cut through by the Dazi-Dasha fault. Therefore, the Naka-Naduiduo fault was formed earlier than the Dazi-Dasha fault.展开更多
The development of Differential Synthetic Aperture Radar Interferometry （D-InSAR）, in terms of its evolution from classic to advanced forms, such as Least-Squares approach, Permanent Scatterer Interferometry, Small ...The development of Differential Synthetic Aperture Radar Interferometry （D-InSAR）, in terms of its evolution from classic to advanced forms, such as Least-Squares approach, Permanent Scatterer Interferometry, Small Baseline Subset, and Coherent Pixel Technique, is reviewed, describing concisely the main principles of each method and highlighting the difference and relationship between them. Applications of InSAR technology in China were then introduced, together with the obstacles to overcome and feasible strategies, such as integrating MERIS/MODIS data to compensate for the atmospheric effect and GPS, and multi-platform SAR data to make InSAR technique practical and operational under various conditions. The latest devel- opments were then analyzed along with high-quality SAR data, available thanks to the newly launched high-tech satellites, TerraSAR-X, and Cosmo Sky-med, and conclusions were drawn about the main limitations of the technique.展开更多
The mission to detect gravitational wave in space requires a not only sophisticated but also ultra-precise laser interferometric measurement system. Within a single spacecraft, tens of interferometric beat signals are...The mission to detect gravitational wave in space requires a not only sophisticated but also ultra-precise laser interferometric measurement system. Within a single spacecraft, tens of interferometric beat signals are generated at the same time and they also need to be processed simultaneously. In this paper, a multi-channel phasemeter which can parallelly process the signals is constructed. The test shows that a sensitivity of 2n grad/√Hz could be achieved in the frequency range of 0.1 to 10 Hz. We also utilize the phasemeter to evaluate the performance of a heterodyne laser interferometer.展开更多
The principle of non-interference is that sovereign states shall not inter- vene in each other＇s internal affairs. It is the general principle of contemporary international law that the non-interference in each other...The principle of non-interference is that sovereign states shall not inter- vene in each other＇s internal affairs. It is the general principle of contemporary international law that the non-interference in each other＇s internal affairs is based on the respect for states＇ sovereignty and territorial integration, which governs the relations between states in regard to their rights and obligations. It has been estab- lished as the general principle of international law or customary law in compliance with the purposes and principles of the UN Charter. Nevertheless, its application depends on the determination of the matter in question within the domestic juris- diction and of the applicable international laws accordingly. It was and is still controversial in practices of international law to make such determination. This article focuses on the analysis of the principle of non-interference and its relation with the determination of domestic affairs, the relation between the principle of non- interference and the R2P, as well as the recent institutional development of global protection for human rights such as the HRC related to domestic affairs.展开更多
基金This project was sponsored bythe Special Programof Social Public Welfare Research of the Ministry of Science and Technology of PRC(2002D1A10001)
文摘Using ELLS-1/2 radar satellite data, we generated a Digital Elevation Model by Interferometric Synthetic Aperture Radar, and the ERS-1/2 DEM that we generated is obviously superior to both the 1/25 ten thousand-scale DEM of the National Fundamental Geographic Information System of China and the 90-m spatial resolution＇s SRTM DEM that America published in 2004 when it showed the characteristics of tiny structure relief. By analyzing the relief characteristics of the Bengcuo fault zone based on ERS-1/2 DEM, we find that the relief on the connection location of the Bengcuo and Pengcuo fault zones has complex characteristics. A structure relief that is similar to the Pengcuo fault zone crosses through the Dazi-Dasha fault on the the Bengcuo fault zone, while the Dazi-Dasha fault crosses through a gully at this place. This indicates that the Dazi-Dasha fault has been active at this place recently. At the same time, the Naka-Naduiduo fault is severed by the gully which was cut through by the Dazi-Dasha fault. Therefore, the Naka-Naduiduo fault was formed earlier than the Dazi-Dasha fault.
基金Support by the Ministry of Education Innovation Team （IRT0865） the National Natural Science Foundation of China （51004100） the Project for Ph.D Program （20060290511）
文摘The development of Differential Synthetic Aperture Radar Interferometry （D-InSAR）, in terms of its evolution from classic to advanced forms, such as Least-Squares approach, Permanent Scatterer Interferometry, Small Baseline Subset, and Coherent Pixel Technique, is reviewed, describing concisely the main principles of each method and highlighting the difference and relationship between them. Applications of InSAR technology in China were then introduced, together with the obstacles to overcome and feasible strategies, such as integrating MERIS/MODIS data to compensate for the atmospheric effect and GPS, and multi-platform SAR data to make InSAR technique practical and operational under various conditions. The latest devel- opments were then analyzed along with high-quality SAR data, available thanks to the newly launched high-tech satellites, TerraSAR-X, and Cosmo Sky-med, and conclusions were drawn about the main limitations of the technique.
基金The Scientific Equipment Development and Research Project of Chinese Academy of Sciences(Grant No.Y231411YB1)The Space Science Research Projects in Advance of Chinese Academy of Sciences(Grant No.O930143XM1)
文摘The mission to detect gravitational wave in space requires a not only sophisticated but also ultra-precise laser interferometric measurement system. Within a single spacecraft, tens of interferometric beat signals are generated at the same time and they also need to be processed simultaneously. In this paper, a multi-channel phasemeter which can parallelly process the signals is constructed. The test shows that a sensitivity of 2n grad/√Hz could be achieved in the frequency range of 0.1 to 10 Hz. We also utilize the phasemeter to evaluate the performance of a heterodyne laser interferometer.
文摘The principle of non-interference is that sovereign states shall not inter- vene in each other＇s internal affairs. It is the general principle of contemporary international law that the non-interference in each other＇s internal affairs is based on the respect for states＇ sovereignty and territorial integration, which governs the relations between states in regard to their rights and obligations. It has been estab- lished as the general principle of international law or customary law in compliance with the purposes and principles of the UN Charter. Nevertheless, its application depends on the determination of the matter in question within the domestic juris- diction and of the applicable international laws accordingly. It was and is still controversial in practices of international law to make such determination. This article focuses on the analysis of the principle of non-interference and its relation with the determination of domestic affairs, the relation between the principle of non- interference and the R2P, as well as the recent institutional development of global protection for human rights such as the HRC related to domestic affairs.
