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| 1 | Wave height measurement in the Taiwan Strait with a portable high frequency surface wave radar显示文摘As an important equipment for sea state remote sensing, high frequency surface wave radar(HFSWR) has received more and more attention. The conventional method for wave height inversion is based on the ratio of the integration of the second-order spectral continuum to that of the first-order region, where the strong external noise and the incorrect delineation of the first- and second-order Doppler spectral regions due to spectral aliasing are two major sources of errors in the wave height. To account for these factors, two more indices are introduced to the wave height estimation, i.e., the ratio of the maximum power of the second-order continuum to that of the Bragg spectral region(RSCB) and the ratio of the power of the second harmonic peak to that of the Bragg peak(RSHB). Both indices also have a strong correlation with the underlying wave height. On the basis of all these indices an empirical model is proposed to estimate the wave height. This method has been used in a three-months long experiment of the ocean state measuring and analyzing radar, type S(OSMAR-S), which is a portable HFSWR with compact cross-loop/monopole receive antennas developed by Wuhan University since 2006. During the experiment in the Taiwan Strait, the significant wave height varied from 0 to 5 m. The significant wave heights estimated by the OSMAR-S correlate well with the data provided by the Oceanweather Inc. for comparison, with a correlation coefficient of 0.74 and a root mean square error(RMSE) of 0.77 m. The proposed method has made an effective improvement to the wave height estimation and thus a further step toward operational use of the OSMAR-S in the wave height extraction. | ZHOU Hao ROARTY Hugh WEN Biyang | 2015 | Acta Oceanologica Sinica2015，34，1： | 5 |
| 2 | New method to implement digital down converter in radar system显示文摘Digital down converter (DDC) is the main part of the next generation high frequency (HF) radar. In order to realize the single chip integrations of digital receiver hardware in the next generation HF Radar, a new design for DDC by using FPGA is presented. Some important and practical applications are given in this paper, and the result can prove the validity. Because we can adjust the parameters freely according to our need, the DDC system can be adapted to the next generation HF radar system. | Ma Zhigang Wen Biyang Zhou Hao Bai Liyun | 2005 | Journal of Systems Engineering and Electronics2005，16，4： | 2 |
| 3 | Inhibitive Mechanisms of Two Silicon Compounds on Powdery Mildew of Melon显示文摘Seedlings of Yujinxiang melon were used to investigate the effect and inhibitive mechanism of sodium silicate and nanosized silicon oxide on powdery mildew. The results showed that the severity of powdery mildew on melon seedlings was lowered significantly by treatment with either of the two silicon compounds, although the effect of sodium silicate was more powerful than silicon oxide. Application of sodium silicate to the seedlings caused significant increases in the activity of peroxidase (POD) and of β-1,3-glucosidase (GLU), both enzymes are known to be associated with the disease defence systems of plants. SEM-EDX analysis of sodium silicate-treated leaves of the melon seedlings showed an elevated level of silicon deposit at stomata and epidermis. Treatment with nanosized silicon oxide also resulted in a similar increase in silicon deposit, but the treatment did not cause a significant increase in POD activity. | GUOYu-rong LIULei ZHAOHua CHENDe-rong BIYang | 2005 | Agricultural Sciences in China2005，4，5： | 2 |
| 4 | UHF surface dynamics parameters radar design and experiment显示文摘 | Wang Sichao Wen Biyang Wang Caijun | 2014 | IEEE Microwave and Wireless Components Letters2014，24，1： | 1 |
| 5 | Determination of selenomethionine in selenium-enriched yeast using capillary electrophoresis on-line coupled with electrochemiluminescence detection显示文摘 | DENG Biyang SHI Aihong LI Linqiu | 2009 | Mierochim Acta2009，165，34： | 1 |
| 6 | Determination of ultra-trace formaldehyde in air using ammonium sulfate as derivatizationreagent and capillary electrophoresis coupled with on-lineelectrochemiluminescence detection 显示文摘 | DENG Biyang LIU Yang YIN Huihui e( al | 2012 | Talanta2012，91，： | 1 |
| 7 | Hardware system design for UHF surface velocities radar显示文摘UHF surface velocities radar is developed based on the successful ocean state measuring and analyzing radar system. The design method for UHF radar system is presented. It is designed to operate at UHF channel, and the transmit power is under 5W. Maximum range of field test over fresh water can be a kilometer. The field tests at Tangsun River and at Majiatan and Gaohazhou proved that USVR System can be used successfully. | Wen Biyang Ma Zhigang Yuan Fei Zhou Hao | 2007 | Journal of Systems Engineering and Electronics2007，18，2： | 1 |
| 8 | Application of the Three-Dimensional Shallow Sea and Continental Shelf Mode for Inversion of Undercurrent显示文摘Due to the incapability of high frequency surface wave radar (HFSWR) to detect undercurrent parameters, a new algorithm is proposed to apply a three-dimensional (3D) nonlinear barotropic shallow sea and continental shelf model in coordinate system to the inversion of undercurrent. The calculation domain of this model is the area detected by HFSWR. Considering the benthal topography of the detected area and the ocean dynamic parameters, such as surface current, wind and wave detected by HFSWR, the relation between surface current and undercurrent is established in this model. Accordingly, the undercurrent parameters of corresponding area are obtained. The inversion results agree with the law of ocean dynamics and reproduce the movement of undercurrent. | WEN Biyang HONG Chun WU Rui | 2006 | Wuhan University Journal of Natural Sciences2006，11，2： | 1 |
| 9 | Method to suppress radio-frequency interference in HF radars显示文摘 | Yang Jun Wen Biyang Wu Shicai | 2004 | Electronics Letters2004，40，2： | 1 |
| 10 | Wave Extraction with Portable High-Frequency Surface Wave Radar OSMAR-S显示文摘High frequency surface wave radar(HFSWR) has now gained more and more attention in real-time monitoring of sea surface states such as current, waves and wind. Normally a small-aperture antenna array is preferred to a large-aperture one due to the easiness and low cost to set up. However, the large beam-width and the corresponding incorrect division of the first- and second-order Doppler spectral regions often lead to big errors in wave height and period estimations. Therefore, for the HFSWR with a compact cross-loop/monopole antenna(CMA), a new algorithm involving improved beam-forming(BF) and spectral division techniques is proposed. On one hand, the cross-spectrum of the output sequence by the conventional beam-forming(CBF) with all the three elements and the output with only the two loops is used in place of the CMA output self-spectrum to achieve a decreased beam-width; on the other hand, the better null seeking process is included to improve the division accuracy of the first- and second-order regions. The algorithm is used to reprocess the data collected by the portable HFSWR OSMAR-S during the Sailing Competition of the 16 th Asian Games held in Shanwei in November 2010, and the improvements of both the correlation coefficients and root-mean-square(RMS) errors between the wave height and period estimations and in situ buoy measurements are obvious. The algorithm has greatly enhanced the capabilities of OSMAR-S in wave measurements. | ZHOU Hao ROARTY Hugh WEN Biyang | 2014 | Journal of Ocean University of China2014，13，6： | 1 |
| 11 | Determination of norfloxacin in human urine by capillary electrophoresis with electrochemiluminescence detection显示文摘 | Biyang Deng Caina Su Yanhui Kang | 2006 | Analytical and Bioanalytical Chemistry2006，，7： | 1 |
| 12 | Wave height estimation using the singular peaks in the sea echoes of high frequency radar显示文摘The popular methods to estimate wave height with high-frequency(HF) radar depend on the integration over the second-order spectral region and thus may come under from even not strong external interference. To improve the accuracy and increase the valid detection range of the wave height measurement, particularly by the smallaperture radar, it is turned to singular peaks which often exceed the power of other frequency components. The power of three kinds of singular peaks, i.e., those around ±1,±2^(1/2) and ±1(2^(1/2)) times the Bragg frequency, are retrieved from a one-month-long radar data set collected by an ocean state monitoring and analyzing radar,model S(OSMAR-S), and in situ buoy records are used to make some comparisons. The power response to a wave height is found to be described with a new model quite well, by which obvious improvement on the wave height estimation is achieved. With the buoy measurements as reference, a correlation coefficient is increased to 0.90 and a root mean square error(RMSE) is decreased to 0.35 m at the range of 7.5 km compared with the results by the second-order method. The further analysis of the fitting performance across range suggests that the peak has the best fit and maintains a good performance as far as 40 km. The correlation coefficient is 0.78 and the RMSE is 0.62 m at 40 km. These results show the effectiveness of the new empirical method, which opens a new way for the wave height estimation with the HF radar. | ZHOU Hao WEN Biyang | 2018 | Acta Oceanologica Sinica2018，37，1： | 1 |
| 13 | Determination of selenom- ethionine in selenium-enriched yeast using capillary electrophore-sis on-line coupled with electrochemiluminescence detection 显示文摘 | DENG Biyang SHI Aihong Li Linqiu | 2009 | Microchim Acta2009，165，34： | 1 |
| 14 | Adaptive Cochannel Interference Suppression Based on Subarrays for HFSWR显示文摘 | Wan Xianrong Ke Hengyu Wen Biyang | 2005 | IEEE Signal Processing Letters2005，12，2： | 1 |
| 15 | Method to Suppress Radio-frequency Interference in HF Radars 显示文摘 | Jun Y Biyang W Shicai W | 2004 | IEE Electronics Letters2004，40，2： | 1 |
| 16 | Determination of norfloxacin in human urine by capillary electrophoresis with eleetroehemilumineseenee deteetion显示文摘 | DENG Biyang SU Caina KANG Yanhui | 2006 | Anal Bioanal Chem2006，385，： | 1 |
| 17 | Radio frequency interference suppression in HF radars 显示文摘 | Zhou Hao Wen Biyang Wu Shicai | 2003 | Electronics Letters2003，39，12： | 1 |
| 18 | Dense radio frequency interference suppression in HF radars 显示文摘 | Zhou Hao Wen Biyang Wu Shicai | 2005 | IEEE Signal Processing Letters2005，12，5： | 1 |
| 19 | HF Radar Observation of Tidal Current over the Beibu Gulf, South China Sea显示文摘In this paper, a new fully-digital high frequency(HF) radar system OSMAR-SD(ocean state measuring and analyzing radar, S-smaller, D-digital) is employed for observation of the tidal current over the Beibu Gulf, South China Sea. This system can operate at two frequencies to achieve wider range and better resolution of measurement. Experimental results show that the radar measurements agree with the tide level data well. The environmental noise level is also analyzed to demonstrate its detrimental effect upon the measurement, the period of this effect is about 24 h. Moreover, it's the first time that the characteristic of the irregular diurnal tide over Beibu Gulf is clearly measured by HF radar. | TIAN Yingwei WEN Biyang TAN Jian LI Zili | 2015 | Wuhan University Journal of Natural Sciences2015，20，1： | 1 |
| 20 | Radio frequency interference suppression in small-aperture high-frequency radars显示文摘 | ZHOU Hao and WEN Biyang | 2012 | IEEE Geoscience and Remote Sensing Letters2012，9，4： | 1 |
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