Real - time measurement of rocket rotation angle is needed to help time.

为了对火箭弹实施某种控制以达到减小火箭弹射弹散布和增加射程的目的,需要 实时 测量火箭弹滚转角度.

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Use of signal joint probability of directional derivative entropy minimum get the best rotation angle!

利用信号联合概率的方向导数熵最小获得最佳的旋转角度!

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It's difficult to detect blindly the image rotation angle in blind watermarking under geometry attack.

抗几何攻击的盲检测数字水印的难点是图像旋转角度的盲检测.

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