A5101702620- Radar Systems and Signal Processing
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- CCD and CMOS Imaging Sensors
- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Antenna Design and Analysis
- Infrared Target Detection Methodologies
- Advanced Measurement and Detection Methods
- Embedded Systems and FPGA Design
- Industrial Automation and Control Systems
- Advanced Algorithms and Applications
- Optical Systems and Laser Technology
- Direction-of-Arrival Estimation Techniques
- Military Defense Systems Analysis
- Advanced SAR Imaging Techniques
- Ionosphere and magnetosphere dynamics
- Adaptive Control of Nonlinear Systems
- Antenna Design and Optimization
- Embedded Systems and FPGA Applications
- Inertial Sensor and Navigation
- Advanced Wireless Communication Technologies
- Millimeter-Wave Propagation and Modeling
- Petri Nets in System Modeling
- Fire Detection and Safety Systems
Communication University of China
2024
Shenzhen University
2020
Xidian University
2006-2019
National Earthquake Response Support Service
2012
Shanghai Electric Cable Research Institute
2009
This paper reports the first results of 2D imaging large‐scale traveling ionospheric disturbances (LSTID) using GPS network data from China, combined with observations these events an ionosonde chain. TEC perturbation maps for North America were also constructed to allow study LSTIDs on a global scale. During medium storm 28 May 2011, onset substorm initiated slow‐speed LSTID over just after midnight. Subsequently, reached China 1.5 hours later, at dusk. A second was observed before...
A large-scale antenna array is an enabling technique for millimeter-wave communications. Uniform circular arrays (UCAs) have the spatial invariance property, ensuring same beamforming performance in whole angular region. However, direction-of-arrival (DOA) estimation UCAs challenging since response of a UCA does not conform to Vandermonde structure as that uniform linear array. This letter proposes accurate and low-complexity DOA approach by exploiting good correlation property UCA. The...
Directional modulation (DM) can transmit information to the desired direction or directions with known constellation mappings, but scrambled ones in other directions. However, one problem of design is that when receivers and eavesdroppers are same transmission direction, their beam responses cannot be distinguished, as steering vectors for these locations same. To solve problem, positional (PM) introduced where a given pattern only received at certain positions. In this work, multi-path...
A new ultra-wideband (UWB) antenna with dual notched bands utilizing a simplified composite right/left-handed (SCRLH) resonator is presented. By tuning the dimension of SCRLH resonator, sharp rejection can be achieved at desired frequencies to overcome interference some already existing standards. The UWB 3.5 GHz (WiMax) and 5.8 (WLAN) are designed. measurement voltage standing wave ratio (VSWR) in agreement simulation. results show that proposed not only retains an ultrawide bandwidth but...
Abstract A miniaturization technology of half mode substrate integrated waveguide (HMSIW) is realized by complementary split ring resonators (CSRRs) in this article. The HMSIW etched with CSRRs can be regarded as the one filled a dielectric material higher ε r . With specific CSRR arrays introduced, CSRR‐loaded structure 15% more compact than original one. Moreover, above also used to enhance rejection skirt bandpass filter Finally, and sharp ultra‐wideband designed notched‐band fabricated....
This paper introduces the multi-linear array integrated TDICCD image sensor, analyses characteristic of drives based on this type lists several different driving schemes, uses FPGA as hardware platform, and designs each timing program with VHDL. The optimal not only can generate correct which sensor working normally, but shifts all pixels both panchromatic multi-spectral bands at same frequency in integration time, efficiently avoids imaging interferences among linear arrays, improves...
With the increasing precision of guidance, impact autopilot dynamic characteristics and target maneuvering abilities on guidance is becoming more significant. In order to reduce or even eliminate operation influence, this paper suggests a system model involving novel integral sliding mode law (ISMGL). The method utilizes angle, combined with surface scheme that includes desired line-of- sight line-of-sight angular rate, second-order differential line-of-sight. At same time, evaluation...
This paper presents a high-speed real-time data acquisition and processing system with the advanced FPGA device XC6VLX195T as control unit. The hardware of mainly consists data-acquisition section data-processing section. A ADC 16-Bit resolution 200 MHz sampling rate is applied in In section, original stream processed by PFGA DDR2 SDRAM. main controller advantage such FFT, FIR etc, can be controlled host PC through PCI-E bus interface. Voluminous quickly reaches for record display PCI-E....
High-resolution radar imaging systems are vulnerable to external interferences. When jammer power is large, it has a great impact on detectability and identifilability of the target. A nulling method presented after stretch processing narrowband filtering which uses LMF signal in this paper. Moreover, The algorithm simple computation easy practical engineering. At last computer simulation demonstrates effectiveness method.