HRR Profile Stitching and Velocity Estimation of Step Frequency Radar Analysis of pumped-storage hydro using wind power with different probability distribution parameters of wind speed 频率步进雷达距离像抽取与速度估计的实现不同风速概率分布参数下的风力抽水储能分析
Distortion compensation of high resolution range ( HRR) profiles plays an important role in ISAR imaging of space target with high speed. 高分辨距离像的畸变补偿是空间目标ISAR成像过程中的重要环节。
The boundary shape and length of fire zone are growth with time, which determine the fire HRR is variational with time and space distribution. 火场边界形状长度和火场面积随时间而变化发展,决定了火灾释热率(HRR)在时间和空间分布上都是变化的函数,火灾HRR不同于稳态火和T2火。
For the break and change of the HRR field singularity, fatigue-crack propagation rates are affected by interface. 由于裂纹应力场的间断和由此产生的HRR奇异性发生变化,界面对疲劳裂纹扩展速率有明显影响。
Two usual designs of High-Range-Resolution pulse to pulse frequency shifting RCS outdoor measurement device are analyzed and compared. A simplified design is presented point to the peculiarity of the pulse to pulse frequency shifting RCS measurement One-Dimension imaging. 分析和对比了两种常用的HRR脉间变频外场RCS测试设备的设计方法,针对脉间变频格式RCS测试一维成像的特点提出了一种简化设计的思路。
Method of Using Neural Network Combined with D-S Theory to Carry Out HRR Target Recognition 神经网络与D-S理论结合的HRR识别研究
The crack tip stress singularity in TNT plasticity is not only larger than that in HRR field in classical plasticity theory, but also exceeds or equals to the square-root singularity. Moreover, the stress singularity is independent of the plastic hardening exponent. 裂尖应力场的奇异性与塑性硬化指数无关,不仅高于经典塑性理论中HRR场的应力奇异性,而且超过或等于平方根奇异性。
Based on the existing methods of high frequency RCS simulation of complex target, the methods of complex target's high frequency wideband radar signatures simulation, including HRR and SAR/ ISAR image simulation, are studied in this paper. 该文在现有高频区复杂目标RCS特征信号计算方法的基础上,重点研究了高频区复杂目标宽带雷达特征信号包括目标的高分辨一维距离像和两维SAR/ISAR图像的仿真方法。
The angular distribution functions of HRR singularity fields are analyzed via conservation integrals. 本文利用守恒积分,对HRR奇性场的角分布函数作了进一步的探讨。
The differential cepstrum properties of a radar HRR profile are presented and studied by means of a Z transform, based physically upon the fact that a radar high resolution range profile is characterized by non minimum phase and wavelet features. 根据雷达高分辨距离像具有非最小相位和小波特征的信号性质,采用Z变换方法给出和研究了高分辨距离像的微分复倒谱的性质。
The purpose of autofocusing is to remove the radial motion effect of the target from radar echoes, and only reserve the stepped frequency effect which is the basis of synthetic HRR capability. 自聚焦的目的是从雷达回波中消除目标径向运动的影响,只保留步进频率的影响,而后者是合成HRR能力的基础。
The J-integral fracture criterion based on HRR theory has been widely used in the studies of elastic-plastic fracture of materials. 在弹塑性断裂研究中广泛地采用着J积分断裂判据,这种判据的基础是HRR理论。
Firstly, the thesis introduces the signals of high resolution radar ( HRR), the technology of signal processing and the target-model of radar; on the basis of it, the one dimension range profile of HRR is analyzed. 本文首先介绍了常见的几种高分辨率雷达信号及其处理技术和雷达目标模型,在此基础上分析了高分辨率雷达的一维距离像的特点;
The automatic target detector for High Resolution Radar ( HRR) is considered. 本文研究了高分辨雷达(HRR)的目标自动检测器。
We investigate two autofocusing approaches for synthetic HRR radars using stepped frequency waveform in this paper. 本文研究步进频率波形合成HRR雷达的两种自聚焦方法。
Eigen-subspace and canonical-subspace methods are studied and applied to feature-extraction for target recognition using range profiles of a High-range-Resolution-Radar ( HRR) system. 基于高分辨一维像,研究特征子空间法和正则子空间法在雷达目标识别中的应用。
For the requirement of later derivation, the HRR singular fields and the high-order asymptotic fields are first listed. 为了推导的需要,首先列出了幂率型硬化材料的HRR奇异场和高阶渐近场。
The method of ranging tracking using wavelet transform in high resolution radar system is researched in this paper. 本文研究了在高距离分辨雷达(HRR)中对输入的回波信号进行子波变换实现精确距离跟踪。
The problem of detecting the signals of high-resolution radar ( HRR) in high clutter environments is investigated in this paper, with the use of theory of fuzzy sets. 本文研究了强杂波干扰背景下运用模糊集合理论解决高分辨雷达信号的检测问题。
So far, there has not been a mature signal detection approach for HRR radar signals yet. 迄今为止,还没有一种成熟的高距离分辨雷达信号检测方法。
The experimental singularity fields are analyzed and compared with HRR theoretical solution. Some aerodynamic laws of aircraft flying near sea surface are given through the analysis of results calculated and tested on a typical configuration. 由试验结果分析了裂纹尖端位移奇异性,得到J主导区和围绕裂纹尖端附近HRR场分布。通过典型外形的计算、试验结果分析,提出了地效区内空气动力的一些规律。
Aiming at the classic space targets, this paper discusses the reconstruction and feature extraction of HRR profiles by sparse component analysis. 针对典型的空间目标,文章采用稀疏成份分析法研究了一维距离像的超分辨重构和特征提取问题。
The echo models of different high-range resolution ( HRR) broadband radar signals are analyzed in this paper. 首先分析了不同距离高分辨宽带雷达信号波形的回波模型。
HRR-dominace and the application feasibility of J-integral in heterogeneous welded joints is investigated by Moire interferometry of reflected sticking film. 采用反射式贴片云纹干涉法对焊接接头裂纹尖端位移场进行了测量,并考察了非均质焊接接头中的HRR主导有效性与J积分断裂判据的应用可行性。
The cause of the invalidity of the HRR theory when it is applied to elastic-plastic materials in the plane strain case is analyzed and discussed, a dual-parameter fracture criterion is suggested for this case. 对于在平面应变条件HRR理论应用于弹塑性材料失效的原因进行了分析和讨论,并提出了在此情况下适用的双参数断裂判据。
The results indicate that the application of the HRR theory is positive only in the plane stress case. 结果表明,仅仅在平面应力的条件下HRR理论的应用是肯定的。
The echo signal of a high-range-resolution radar ( HRR) contains much information about target. By using this information and feature extraction method fully and properly, an efficient target recognition can be executed. 高距离分辨雷达(HRR)的回波中蕴含丰富的目标信息,充分利用目标回波并采用恰当的特征抽取方法,可以有效地识别目标。
The approach of the first type boundary condition and the block method used in large-scale linear equations are presented for the HRR model of isolated target in homogeneous half space. 针对HRR的模型为均匀半空间中孤立目标体,给出了有限元算法中第一类边界条件的处理方法,大型线性方程组的分块解法等。
The High Range Resolution ( HRR) radar with wide bandwidth has the capability of anti-stealth, anti-jamming and anti-low altitude penetration. 高距离分辨雷达具有大的绝对带宽、极高的距离分辨率和良好的反隐身、抗干扰、抗低空突防性能,它在目标成像、检测和识别领域有着极其广阔的应用背景。
Fire heat release rate ( HRR) reflects the energy of the fire, which is the basic factor of the fire. 火灾热释放率(HRR)体现了火灾中能量释放的多少,是决定火灾危险的基本因素。