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[FeCo-O/NiZn-Ferrite]n multilayer films with different thicknesses of FeCo-O and NiZn-Ferrite layer were fabricated by alternant magnetron sputtering at room temperature with no external magnetic field applied. The effect of monolayer thickness on magnetic and high frequency characteristics was systematically investigated. The multilayer thin film could acquire excellent high-frequency properties...
This paper discusses the development and evaluation of an inertial navigation system (INS) for marine navigation applications. Marine navigation is generally a challenging mission, because, compared with the aviation or land navigation, the marine navigation often needs to endure for a long term and the navigation accuracy is demanding. The commonly used strapdown INS generally cannot satisfy the...
Safe and reliable operation of the power grid equipment directly relates to the safety and reliability of power systems in the electric power systems. When the short circuit fault occurs in the power grid, over-current flows through the electric devices will produce certain effects on the equipment. Long-term cumulative effect of many times faults cause significant influence on the key equipment....
With the development of automatic control technology, the various types of switches are widely used in control systems, especially in the power systems, these switches can timely record the action time and running status of each device, which will also affect the reliable and stable operation of power system. SOE (sequence of event) is a time-stamp synchronization with switching input displacement...
Substation configuration description (SCD) plays a significant role in IEC 61850 smart substations. This paper analyses present situations of SCD application and proposes an effective solution of secondary system visualization and intelligent diagnosis for smart substations using an approved SCD model. It is possible to realize various advanced applications and object-oriented management of smart...
The increased construction and reconstruction of smart substations has exposed a problem with version management of substation configuration description language (SCL) files due to frequent changes. This paper proposes a comparative approach for differentiation of smart substation SCL configuration files. A comparison model for SCL configuration files is built in this method, which is based on the...
We propose a novel scheme by using two parallel Mach-Zehnder interferometers to monitor in-band OSNR. Simulation results show that OSNR range from 10 to 28dB within an error of ±0.5dB are successfully measured for different signals.
Space debris is a serious environmental problem in space, because its high speed will cause potential collision risk and bring on destructive disaster to operational spacecrafts. Since the size of debris is directly related to the impact of collision, shape estimation is an important task in the observation of space debris. Imaging with narrowband radar is an available technical approach to extract...
To obtain high cross-range resolution in the inverse synthetic aperture radar (ISAR) image, it is necessary to increase the rotation angle of the target with respect to radar line of sight during the coherent integration interval. However, for a wide-angle target, the rotational motion will generate the migration through resolution cells (MTRC) inevitably which may lead to image defocusing in both...
This paper analyses the characteristics of the high peak power pulse laser amplification in a Yb-doped double-clad fiber amplifiers (YDFA-DC) pumped by pulse LD. The pump duration, the pump power and the delay time between the pump and the laser seed are discussed in detail, which are the most important parameters when such a fiber amplifier stage is designed.
Optical remote sensing images of urban areas usually contain large amount of line-segments that represent the boundaries of man-made objects. The extraction and vectorization of these line-segments are desirable for many applications, such as digital city reconstruction. This paper presents a “Sweep & Scan” algorithm for the extraction and vectorization of these line-segments. The “Sweep” part...
This paper suggests extending scores of technical efficiency as used in, for example, data envelopment analysis (DEA) to efficiency scores defined as so-called fuzzy intervals. Fuzzy scores allow the decision maker to use scores of technical efficiency in combination with other sources of available performance information e.g. expert opinions, key figures etc. In this sense, results of, DEA will be...
In this study, we look at the current global status and trend of technology foresight, analyze the development of group decision support system and how it is utilized in technology foresight, determine the stakeholders to participate in technology foresight from global cases, analyze and determine whether the methods used in global technology foresight is appropriate for the Internet.
The most important core competences of school education resources allocation is the teaching activities of integrating information technology into instruction. This paper explores integrating information technology into instruction how to build an education resources allocation planning model using De Novo programming for case study. We expect building an efficient planning model of integrating information...
Due to global competition and rapid technological advancement, foresight has become an important method of formulating technological policies. Consensus forming is one of the benefits of the foresight procedure as it allows the society to effectively understand a technology's characteristics during its initial developmental stage. Also, foresight effectively guides the development of a technology,...
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