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A novel method for PAPR reduction of the OFDM signal using nonlinear scaling and FM Regular Article
Yi-hu Xu, Jung-Yeol Oh, Zhen-hao Sun, Myoung-Seob Lim,xuyh@ybu.edu.cn,mslim@jbnu.ac.kr
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 11, Pages 1587-1594 doi: 10.1631/FITEE.1800438
Keywords： 正交频分复用；峰均比；非线性缩放；调频技术
Study on motion compensation method for MMW Chirp － SF radar
Wang Guili,Li Xingguo
Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 184-187
MMW Chirp - SF radar is a kind of radar to get high range resolution, but the problem of rangevelocity coupling is serious. So it is necessary to carry out the motion compensation in order to increase the range resolution of moving target. This paper puts forward a velocity measurement method compounding the Pulse Doppler velocity measurement and the time-domain correlation method based on Chirp - SF signal. The simulations results show that this method can be used to measure velocity accurately with simple arithmetic and high speed.
Keywords： MMW radar Chirp - SF Doppler motion compensation
Tu Youchao,Zhao Huichang,Zhou Xingang
Strategic Study of CAE 2009, Volume 11, Issue 9, Pages 68-73
Development and application of pseudo-random code combined fuze can be guided in theory by researching its anti-jamming performance. The anti-noise FM jamming performance of pseudo-random code phase modulation and sine FM combined fuze is analyzed based on the criterion of signal to jamming ratioin (SJR) gain in this paper. First, the principle of the combined fuze was introduced, and its overall SJR gain is reduced in detail under the noise FM jamming, then, the factors affecting its anti-noise FM jamming performance were analyzed, such as the nth order Bessel function of the first kind, Doppler frequency, pseudo-random code period, pulse width, and spot error. The results provide the important theoretic foundation for the improvement on anti-noise FM jamming performance of the combined fuze. At the same time, the studying method put forward in this paper may be used as the reference for analyzing anti-jamming performance of other type of fuzes.
Keywords： pseudo-random code fuze sine FM SJR gain anti-jamming
FM Radio Based Non-cooperative Bistatic Radar Experimental System
Wang Yan
Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 39-42
An experimental FM radio based non-cooperative bistatic radar is briefly described, and two related key techniques, i. e. line-of-sight (LOS) signal cancellation and targets detection, are listed in this paper. Other than algorithms appeared in most papers, NLMS based non-causal filters are used to equalize the array multi-channel differences. The LOS signal about 80 dB above the noise level is cancelled completely after joint time-space processing. Civil airplanes are detected 300 km away. Experimental data verifies the simplicity and effectiveness of the proposed method.
Keywords： FM radio non-cooperative bistatic radar LOS signal equalization DBF
Stepped frequency chirp signal imaging radar jamming using two-dimensional nonperiodic phase modulation Research Article
Qihua WU, Feng ZHAO, Tiehua ZHAO, Xiaobin LIU, Junjie WANG, Shunping XIAO
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 3, Pages 433-446 doi: 10.1631/FITEE.2200298
Keywords： Radar jamming Stepped frequency chirp signal Nonperiodic phase modulation Wideband radar
Ultra-wideband FMCW ISAR imaging with a large rotation angle based on block-sparse recovery Article
Ke JIN, Tao LAI, Gong-quan LI, Ting WANG, Yong-jun ZHAO
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12, Pages 2058-2069 doi: 10.1631/FITEE.1601310
Keywords： Frequency modulated continuous wave (FMCW) Inverse synthetic aperture radar (ISAR) Match-filter-based algorithm Compressed sensing Block sparsity
Lin Heng,Zhou Yuan and Liu Yufei
Strategic Study of CAE 2017, Volume 19, Issue 1, Pages 124-132 doi: 10.15302/J-SSCAE-2017.01.018
This paper focuses on technology hot spots, frontier identification, and trend analysis of high-tech foresight, and puts forward a more complete analysis method based on previous studies. In this paper, we take robot technology as an example in order to identify hot spots and frontiers in technology, along with their development trends. These findings have great significance for the proposal of a technology list and for the allocation of the technology industry in the Research on China’s Engineering Science and Technology Development Strategy 2035.
Keywords： technology foresight technology hot spots frontier of technology patent analysis robot technology
New progress of Chinese rock engineering
Qian Qihu
Strategic Study of CAE 2010, Volume 12, Issue 8, Pages 37-48
Some of ground-breaking achievements of Chinese rock engineering are described in the paper. In the field of hydropower construction, the stability and monitoring technology of ship lock slope of the Three Gorges, stability and supporting technologies for high slope in deep river valley and hydropower projects and stability technology of underground large-span high side-wall caverns group were introduced. In highway and railway construction, the construction technology for passing through perennial frozen areas of Qinghai-Tibet railway, supporting technology for squeezed large deformation in Wushaoling Tunnel, construction technology of high-cold high-altitude Fenghuo Mountain tunnel and Erlang Mountain tunnel are presented, as well as geological prediction techniques for karst area tunnels. As for mining technology, a new set of coal mine roadway supporting technology system, mining technology for mixture of gas and low permeability coal seams without pillar, and safe and efficient mining technology for deep open pit were introduced. In addition, the new technology of rock anchorage and fine blasting technology were also described.
Keywords： rock engineering hydropower engineering supporting technology geological forecasting anchoring technology blasting
Wang Weiyuan,Wang Yuelin
Strategic Study of CAE 2002, Volume 4, Issue 6, Pages 56-62
The packaging of micro electro mechanical systems (MEMS) is referred to first-level packaging and limited generally to the preservation of wafer in this paper. It is based on bulk silicon bonding technology and film sealed technology. The bulk silicon bonding technology includes electrostatic bonding, silicon direct bonding and interfacial layer assisted bonding. It is used for making material acting as substrate or cover of the chip. The film sealed technology includes whole-wafer operation, local-wafer operation and selective preservation. It is used to seal micro channel or micro hole to form a vacuum or low-pressure cavity or protect from atmosphere influence. The very high importance not to forget packaging at the beginning of a project, when hoping to industrialize MEMS is discussed. In order to obtain high performance-price ratio,it is necessary to weigh the device performance against the chip complexity. The commercialized pressure sensors, accelerometers, digital micro mirror devices, etc., collected from literatures are used as examples.
Keywords： packaging of MEMS bulk silicon bonding technology film-sealed technology
Measurement and Information Technology
Zhang Guoxiong
Strategic Study of CAE 2000, Volume 2, Issue 3, Pages 62-66
Measurement is an important means for obtaining information in research and production. Both the quality of products and the productivity of production highly depend on measurement. An important trend in the development of measurement is its merging with information technology. The requirements in high accuracy of measurement, on-line and dynamic measurements, measurements of complicated parameters and under complex conditions and intelligent measurements ask for the merging of measurements with information technology. This merging is carried out through the whole process. Modulation and demodulation, data sampling and reconstruction, signal merging, data compression, filtering, signal transformation, time series analysis, spectrum analysis, data fitting and modeling, pattern recognition, neural network, simulation and virtual measurement, error separation, error compensation, redundancy technique, decision making, intelligent techniques, etc. , are widely used in measurements. Some practical examples of this merging are given in the paper. The accuracy of coordinate measuring machines (CMMs) can be greatly enhanced by using error compensation technique. Modeling, error calibration and compensation software are three key techniques in error compensation of CMMs. Applications of redundancy technique in roundness and spindle error motion measurement, in large scale metrology are presented as well. Redundancy technique provides a powerful means in optimization of measurements, system self-calibration, error compensation, recovering the lost information and many other applications.
Keywords： measurement information technology error compensation modeling redundancy technique error separation
Research on Development Strategy of Unmanned Driving Technology
Yang Yanming, Gao Zenggui, Zhang Zilong, Shen Yue, Wang Linjun
Strategic Study of CAE 2018, Volume 20, Issue 6, Pages 101-104 doi: 10.15302/J-SSCAE-2018.06.016
Unmanned driving technology is considered as a highly disruptive technology in the field of vehicle engineering. By means of expert interviews, comparative analysis and literature research, this paper analyses the development trend and stage of unmanned driving technology, and evaluates its potential values and social impacts. It also proposes to promote the development of unmanned driving technology by strengthening the research on automobile wire control technology, energy power technology and driving cognitive technology.
Keywords： disruptive technology unmanned driving technology automotive wire control technology energy power technology driving cognitive technology
The Development Trend of Aeronautic Technology and the Building of Technology Innovation Bases
Zhang Yanzhong
Strategic Study of CAE 1999, Volume 1, Issue 1, Pages 19-23
In the 21st century, the next generation aircraft will be faster, larger, safer, more economic and resources saving.The aircraft such as airliner for 1000 or more passengers, hypersonic vehicle, mini-UAV, ground effect aircratf and tiltrotor aircraft will be put into market.The use of substitute aviation fuel can reduce the dependence on petroleum and the atmosphere pollution. The economy, safety and environmental protection performance will be improved several even ten times. Faced to the challenge, we must enhance the building of aeronautic technology innovation bases.
Keywords： aeronautic technology development trend technology innovation key laboratory
Technology Foresight Research on China’s Environmental Engineering Science and Technology to 2035
Dan Zhigang,Shi Feifei,Wang Zhizeng,Wang Huieng、Zhang Peilei、Hao Jiming、Duan Ning
Strategic Study of CAE 2017, Volume 19, Issue 1, Pages 80-86 doi: 10.15302/J-SSCAE-2017.01.012
The Delphi method is the most common method of technology foresight, which is a significant basis for establishing development strategies and policies of science and technology. This study proposes 45 alternative technologies in the field of environmental engineering science and technology through a literature survey, experts' advice, and discussion meetings. These technologies relate to air pollution prevention and control; water pollution prevention and control; soil pollution prevention and control; solid waste pollution prevention, control, and utilization; ecological protection and restoration; environmental monitoring, early warning, and risk control; resource utilization and cleaner production. Based on results that were obtained according to the Delphi method, this research analyzes the realization time, R&D level, and restriction factors for the key technologies, common technologies, and disruptive technologies that were determined for 2035. This study provides a reference for establishing development strategies and objectives for China’s environmental engineering science and technology over the next 20 years.
Keywords： environmental engineering science and technology technology foresight Delphi method key technology common technology disruptive technology
Discussion on technological innovation in petrochemical enterprise
Hou Xianglin
Strategic Study of CAE 1999, Volume 1, Issue 1, Pages 36-37
创新是进步的灵魂。社会的发展，文明的进步无不赖于创新。企业的技术创新应以提高经济效益为目的。要获得好的创新成果，需要有一个好的创新环境。在客观上要创造有利于科技人员创新的环境，在主观上要求科技人员解放思想，敢于标新立异；同时又要实事求是，深入学习前人、他人的成果和经验。
Research of Constructing Technique Supporting System of Agriculture Informationization
Guo Shupu,Zhang Liping,Shen Jichang,Dong Wei
Strategic Study of CAE 2005, Volume 7, Issue 9, Pages 89-94
The agriculture informationization is supported by related information technique. The paper expatiates on general characters of agriculture informationization, introduces current development of agriculture informationization supporting system,and analyses the subsistent problems of the agriculture informationization. It brings forward that the pivots of quickening the construction of agriculture informationization are to manage the research of the preservation technique of agriculture information, develop agriculture information application technique and build the network for agriculture information spreading.
Keywords： agriculture informationization technique supporting system information preservation technique information application technique information spreading network
Title Author Date Type Operation
A novel method for PAPR reduction of the OFDM signal using nonlinear scaling and FM
Yi-hu Xu, Jung-Yeol Oh, Zhen-hao Sun, Myoung-Seob Lim,xuyh@ybu.edu.cn,mslim@jbnu.ac.kr
Journal Article
Performance research on anti-noise FM jamming of pseudo-random code phase modulation and sine FM combined fuze
Tu Youchao,Zhao Huichang,Zhou Xingang
Journal Article
Stepped frequency chirp signal imaging radar jamming using two-dimensional nonperiodic phase modulation
Qihua WU, Feng ZHAO, Tiehua ZHAO, Xiaobin LIU, Junjie WANG, Shunping XIAO
Journal Article
Ultra-wideband FMCW ISAR imaging with a large rotation angle based on block-sparse recovery
Ke JIN, Tao LAI, Gong-quan LI, Ting WANG, Yong-jun ZHAO
Journal Article
Technology Hot Spots and Frontier Identification Support to 2035: The Technology List Adjustment Method, Using Robot Technology as an Example
Lin Heng,Zhou Yuan and Liu Yufei
Journal Article
Packaging of Micro Electro Mechanical Systems Based on Bulk Silicon Bonding and Film Sealed Technology
Wang Weiyuan,Wang Yuelin
Journal Article
Research on Development Strategy of Unmanned Driving Technology
Yang Yanming, Gao Zenggui, Zhang Zilong, Shen Yue, Wang Linjun
Journal Article
The Development Trend of Aeronautic Technology and the Building of Technology Innovation Bases
Zhang Yanzhong
Journal Article
Technology Foresight Research on China’s Environmental Engineering Science and Technology to 2035
Dan Zhigang,Shi Feifei,Wang Zhizeng,Wang Huieng、Zhang Peilei、Hao Jiming、Duan Ning
Journal Article
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