中国科学院机构知识库网格系统: 检索

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	Mars Rover Penetrating Radar Modeling and Interpretation Considering Linear Frequency Modulation Source and Tilted Antenna 期刊论文 OAI收割 REMOTE SENSING, 2023, 卷号: 15, 期号: 13, 页码: 23 作者: Zhong, Shichao; Wang, Yibo; Zheng, Yikang; Chen, Ling \| 收藏 \| 浏览/下载：6/0 \| 提交时间：2024/01/02 Mars Rover Penetrating Radar (RoPeR) linear frequency modulation continuous wave (LFMCW) tilted antenna structure radiation pattern compensation (RPC)
	Measuring the sound speed in deep-sea first sediment layer using a high-frequency submersible sub-bottom profiler: Method and sea trial application 期刊论文 OAI收割 MARINE GEORESOURCES & GEOTECHNOLOGY, 2021, 页码: 11 作者: Qu, Zhiguo; Zou, Dapeng; Shan, Mingguang; Cao, Xinghui; Xie, Yongqiang \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2022/05/26 Deep-sea first sediment layer sound speed measurement high-frequency submersible sub-bottom profiler transceiver combined transducer linear frequency modulation pulse compression
	Broadband Millimeter-Wave Imaging Radar-Based 3-D Holographic Reconstruction for Nondestructive Testing 期刊论文 OAI收割 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2020, 卷号: 68, 期号: 3, 页码: 1074-1085 作者: Zhang, Xiaoxuan; Liang, Jie; Wang, Nan; Chang, Tianying; Guo, Qijia \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2020/08/24 Radar imaging Imaging Bandwidth Frequency modulation Linearity Data acquisition Holographic imaging internal nondestructive testing (INDT) linear frequency-modulated continuous wave (LFMCW) 3-D reconstruction wideband millimeter-wave (mmW) radar
	Linear-FM random radar waveform compressed by dechirping method 期刊论文 OAI收割 IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 7, 页码: 1107-115 作者: Liu, Jiafang; Zhang, Yunhua; Dong, Xiao \| 收藏 \| 浏览/下载：52/0 \| 提交时间：2019/08/26 radar resolution FM radar random noise radar imaging frequency modulation synthetic aperture radar radar detection jamming dechirping compression method digital radio frequency memory repeat jammer random noise waveforms random radar echo signal low-speed analogue-to-digital converter LFM waveform compression high-resolution circular synthetic aperture radar imaging experiment linear-FM random radar waveform linear frequency modulation random radar waveform
	High precision linear frequency modulation ranging system based on semiconductor laser 期刊论文 OAI收割 MODERN PHYSICS LETTERS B, 2018, 卷号: 32, 期号: 11 作者: Xue, Mingyuan; Gao, Cunxiao; Niu, Linquan; Zhu, Shaolan; Guo, Na \| 收藏 \| 浏览/下载：47/0 \| 提交时间：2018/05/03 Linear Modulation Frequency Laser Ranging Ranging Precision
	Ranging method based on linear frequency modulated laser 期刊论文 OAI收割 laser physics, 2017, 卷号: 27, 期号: 6 作者: Guo, Na; Gao, Cunxiao; Xue, Mingyuan; Niu, Linquan; Zhu, Shaolan 收藏 \| 浏览/下载：100/0 \| 提交时间：2017/06/06 linear modulation frequency fiber laser ranging
	Low-Loss Circularly Polarized Transmitarray for Beam Steering Application 期刊论文 OAI收割 IEEE Transactions on Antennas and Propagation, 2016, 卷号: 64, 期号: 10, 页码: 4471-4476 作者: Huang, Cheng; Pan, Wenbo; Luo, Xiangang \| 收藏 \| 浏览/下载：33/0 \| 提交时间：2018/06/14 Frequency Bands Horn Antennas Linear Transformations Mathematical Transformations Microwave Antennas Phase Modulation Phase Shift Phase Shifters Polarization Reconfigurable Hardware
	Modulation transfer function in seeker camera limits resulting from missile flutter caused by aerodynamic force (EI CONFERENCE) 会议论文 OAI收割 2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 The imaging quality of seeker in flight mode has been evaluated through analyzing the effects of missile flutter on optical modulation transfer function (MTF) of the optical system. Firstly the data of transverse vibration has been processed to eliminate the trend term caused by the trajectory then obtained the displacement with two times trapezoidal integration. For the side rotation the high frequency noise interference in the data has been filtered by using five-point moving average method. Took this model as the quivering rule between the object and the image and then analyzed the effects of the transverse vibration and the side rotation on imaging quality through MTF. By calculation the r.m.s value of the image motion caused by missile transverse vibration is 0.026mm and the side rotation angle is 0.0044 . Through the establishment of two modulation transfer functions (MTF) of image random vibration and linear vibration the results show that the image quality had declined and the effect of transverse vibration on image quality is obvious. Through improving the rigidity of the missile and selection of small focal length optical system and shorten the time of exposure can improve the imaging quality of the seeker. 2010 IEEE.
	Modulation transfer function measurement technique for image sensor arrays (EI CONFERENCE) 会议论文 OAI收割 6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China 作者: Jiang H. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 A new technique is demonstrated for measurement of modulation transfer function (MTF) on image sensor arrays. Fourier analysis of a low frequency bar target pattern is used to extract MTF at odd harmonics of a target pattern frequency up to and beyond Nyquist. The technique is particularly useful for linear image arrays (either conventional linescan or time-delay-integration devices) where conventional slanted-edge technique is not always applicable. The technique is well suited to simple implementation and can provide live presentation of the MTF curve which helps to ensure optimal alignment conditions are achieved. Detailed analysis of the technique and demonstration of experimental results are presented. 2010 SPIE.