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1)  rotation invariant matrix
旋转不变因子
1.
In this paper,we established the Bi-static MIMO radar signal modal based on multiple transmit pulse period,and exploited the rotation invariant matrix of transmitter and receiver according to the characteristic of steering vector.
双基地MIMO雷达的方向矢量是接收方向矢量和发射方向矢量的Kronecker积,较传统雷达复杂,该文给出了多发射脉冲周期下的双基地MIMO雷达信号模型,根据其方向矢量的特点,提取出了收发旋转不变因子,并利用特征值比值法实现了收发角度的配对问题,仿真结果验证了理论分析的有效性。
2.
The key to find direction with ESPRIT algorithm is to exploit the rotation invariant matrix.
ESPRIT算法测向的关键是提取旋转不变因子
2)  ESPRIT [英][es'pri:]  [美][ɛs'pri]
旋转不变子空间
3)  rotation-invariant
旋转不变
1.
A algorithm for rotation-invariant texture image retrieval based on Log Gabor wavelet;
一种基于Log Gabor的旋转不变纹理图像检索算法
2.
A rotation-invariant and multi-scale generalized roughness feature is presented and itwas combinded with an adaptive weighted distance to apply in texture retrieval.
提出一种基于Gabor变换的旋转不变多尺度广义粗糙度特征向量并结合自适应加权距离进行纹理图像检索的方法。
3.
A rotation-invariant denoising algorithm is proposed for restoring noisy images with cyclicr and dihedral symmetries.
提出一种针对循环群和二面体群对称性图像的"旋转不变"去噪算法。
4)  Rotation invariance
旋转不变
1.
In order to effectively classify and recognize multiple targets with rotation invariance,an artificial neural network named Learning Vector Quantization Network(LVQ network) was proposed to combine with the technology of optical correlated recognition.
提出利用光学图像相关识别技术和学习矢量量化神经网络(LVQ网络)相结合,实现多种目标的旋转不变分类识别。
2.
A linear discrimination function (d(w, x)=w′x) is presented to classify two aircrafts (the bomber and the fighter) with rotation invariance.
提出利用线性判别函数,d(x)=W′x,对轰炸机和战斗机两类目标进行旋转不变识别。
3.
A method of obtaining a binary linear discrimination function ( d m(x)=w x ) with rotation invariance is presented.
本文提出一种求解具有旋转不变分类的二值线性鉴别函数(dm(x)=wmx)的新方法,并对轰炸机和战斗机两类目标及客机、轰炸机和战斗机三类目标的旋转不变分类进行了计算机模拟。
5)  Rotation invariant
旋转不变
1.
In this paper,we incorporate Fourier transform with Log-Polar transform to achieve rotation invariant texture analysis.
旋转不变纹理分析是纹理分析的重要方面。
2.
A nice matchimg method must possess the advantages of high matching precision, fast matching speed and the property of rotation invariant.
提出了一种基于小波分解的具有旋转不变特性的三级特征图像快速匹配方案。
3.
How to extract the Rotation invariant feature is still an unsolved problem of the area of content-based 3D models retrieval.
三维模型检索中如何提取关于坐标旋转不变的特征描述符是基于内容三维模型检索技术中有待解决的关键问题之一,利用球面调和分析可以达到较好的效果。
6)  twiddle factor
旋转因子
1.
The advantage of this address generation scheme lies in that it generates fast the operation and twiddle factors address and further reduces the twiddle factors access times and compresses the twiddle factors storage volume in variable point FFT processor.
研究一种适用于VLSI设计的高速、低功耗快速傅里叶变换(FFT)处理器中操作数与旋转因子的地址快速生成方法。
2.
The butterfly arithmetic structures of three kinds of Cooley-Tukey radix-4 FFT algorithm and the simple calculation formulas for their common factors ( p ) of twiddle factor indexes are derived.
推导出三种Cooley -Tukey基 4FFT算法的蝶算结构及旋转因子指数公因子 p的简单计算公式 ,可显著减少求 p值的次数及单次 p值的运算量 。
3.
A simple method for evaluating the common factor p of the twiddle factor indexes in the correct order input DIF radix-four Sande-Tukey FFT algorithm is derived from in the paper.
推导出计算正序输入DIF基4Sande—TukeeFFT算法旋转因子指数公因子p的一种简单方法。
补充资料:旋转
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性质:将图像(或分子)绕一定轴线转动一定角度后能使图像复原的一类对称动作。旋转据以进行的轴线称作旋转轴,使图像绕轴后复原的最小转角称作基转角α。设α=2π/n,显然,旋转角为α整数倍的角度均能使图像复原,不难论证,在2π角度范围内独立、不等同旋转对称动作的种数为n。

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