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The software was developed to realize the braking calculation of self-designed low-floor trams throughadjusting parameters, such as the bogie number, the bogie type, vehicle parameters, electro-hydraulic braking parameters, foundation braking parameters and so on. In this software, the calculation of braking force, the brake cylinder pressure, the braking distance, braking time can be achieved. Thedistribution...
Joint estimation on direction of departure (DOD) and direction of arrival (DOA) is a key problem in bistatic multiple-input multiple-output (MIMO) radar. The conventional singular value decomposition (SVD) or eigenvalue decomposition (EVD) based subspace algorithms have heavy computational burden when the large transmit/receive array size and snapshots are required. In this paper, a low complexity...
A novel antenna consisting of a C band dual polarized waveguide slot antenna and an L band slot antenna with shared apertures is presented. The antenna meets the requirement of a dual band SAR application.
A K-band circularly polarized waveguide phased array antenna was designed, fabricated and measured. The measured results show perfect characteristic and verified by the experiment.
A novel RB-WC-FI-FB (robust worst-case frequency invariance forward-backward) wideband beam former is proposed in this paper. It is developed to improve the robustness against estimation errors of direction of arrival (DOA) and limited sample number, as well as reduce the number of constraints. By incorporating forward-backward estimation and worst-case performance optimization method into the linearly...
A Ku-band cylindrical conformal waveguide slot array antenna is presented. The phase differences between slots on the cylindrical surface are compensated by adjusting the position of radiation slots. As a result of adjusting the position of radiate-slot, the periodicity of high side-lobe is analyzed.
In this paper, a block of active phased antenna subarray module for the high resolution synthetic aperture radar (SAR) applications was designed, fabricated and measured. The measured results of the module show perfect characteristics and verified by the experiment.
Manufacturers are continuously pushing NAND flash memory into smaller geometries and enforce each cell to store multiple bits in order to largely reduce its cost. Unfortunately, these scaling down techniques inherently degrade the endurance and reliability of flash memory. As a result, permanent errors such as block or die failures could occur with a higher possibility. While most transient errors...
A novel microstrip radial 1∶19 power divider is proposed in this paper. The conventional impedance transformation method is used here with a single substrate to realize 1 to 19 power transmission. To verify our design, the power divider is fabricated and tested. It can be observed that it achieves 29.4% impedance bandwidth (VSWR<2), the transmitted magnitude and phase imbalance for 19 outputs are...
A fully-pipelined tile-able 1MB SRAM IP with a 0.127um2 cell in a HKMG 28nm bulk technology has an area of 1.39mm2/MB with 79.2% array efficiency. It operates with 2-cycle latency up to 1GHz. The no-repair hardware has a circuit limited yield of 99.92 and 53% at 100 and 850MHz, respectively with 0.75V VDD. A Data Retention Voltage of 0.42V has been measured.
A monolithic integration of ten 1.5-μm range InGaAsP/InP distributed feedback lasers with 10×1 multimode-interference (MMI) optical combiner using the selective area growth technology is proposed and demonstrated. Our design of selectable light sources with selective area growth (SAG) technology can be fabricated easily, which is promising for obtaining low cost and high-yield multi-wavelength light...
In this paper, the bistatic Multiple-Input Multiple-Output (MIMO) radar with non-circular signals is considered, and a propagator method for joint direction of departure (DOD) and direction of arrival (DOA) estimation is proposed. Owing to the properties of non-circular signals, a new virtual array whose elements are twice as many as MIMO virtual array is formed. In order to avoid the EVD (Eigenvalue...
This paper focuses on fabrication of opal structures by self-assembling silica spheres, which can be used as an array of high throughput and low cost reactors or micro-filters. The reactors can carry out hundreds different reactions in parallel; while there is about 50 nano-liter reagent consumed in each reactor. It not only provides large surface area for reaction, but also solves the issue of high...
In this paper, random switch antenna array (RSAA) is proposed to apply to the switch antenna array (SAA) frequency-modulated continuous-wave (FMCW) radar system. Firstly, the signal model and signal processing method of RSAA is analyzed and it shows that RSAA can successfully solve azimuth-velocity coupling problem. Then we suppose a method by using RSAA to reduce the switching frequency and sampling...
In this paper, we focus on efficient keyword query processing for XML data based on the SLCA and ELCA semantics. We propose a novel form of inverted lists for keywords which include IDs of nodes that directly or indirectly contain a given keyword. We propose a family of efficient algorithms that are based on the set intersection operation for both semantics. We show that the problem of SLCA/ELCA computation...
The matched filter, as a popular method, has been widely used to image a target in the radar society. Nevertheless, there exists an important difficulty that the resolution of the image produced by the filter can be changed with the variation of the target's distance. In this paper a distinct imaging algorithm through the exploitation of the sparsity of the received echoes is presented for the multiple-input...
In this paper, through-silicon via (TSV) array in the form of one signal and four grounds (1S4G) are proposed to achieve high-frequency vertical connectivity for various three dimensional (3D) IC applications. Self-test method is developed to detect the conductor open and insulator short defects of TSV by capacitive and resistive measuring. Further a recovery mechanism for such a TSV array is introduced...
The Chinese Spectral Radioheliograph (CSRH) with 40 antennas of 4.5 m covering 400 MHz–2 GHz (CSRH-I) and 60 antennas of 2 m covering 2–15 GHz (CSRH-II) has been supported and is under construction in a radio quiet region in Inner Mongolia of China. The array of CSRH-I has been assembled and is tested now. The array of CSRH-II will be established during 2011–2013. The progress about the project is...
After characteristic analyzing of materiel development project technical capabilities, this paper defines a quantitative technical risk assessment method based on grey relevancy degree. Firstly, a set of technical capability character parameters of materiel development project and their values are retrieved by technical capability characters analyzing. Then, by task targets breaking down, every sub-task...
We have developed and characterized a novel 3D flexible parylene-based microelectrode array (MEA) with silicon tips, which combines advantages of the rigid 3d electrode and the flexible substrate. The impedance of solid 3D MEA in PBS solution is smaller than that of the planar and hollow 3D MEA. Further tests indicate that the solid 3D MEA has better penetrating performance, and retains previous structure...
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