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- A spectrum hole detection scheme using the feature of cyclostationary of the comminicating signal is proposed, and its feasibility and reliability is tested with PSK signal as an example. 本文提出了利用通信信号的循环平稳特征进行频谱空穴检测的方案，并以PSK信号为例验证了该方法的有效性和可靠性。
- spectrum hole detection 频谱空洞探测
- We use drilling hole detection, excavation eye-measurement and geological analysis technique to survey the pipe network. 本文论述了钻孔探测法、开挖目测法及地质分析法对埋地煤气管网进行全面的普查。
- The high-speed hole detection system for strip steel was developed to meet the urgent needs for detection of hole defects in the strip steel produced by 1420 CDCM mill in Baosteel Co. 针对宝钢冷轧1420酸轧联合机组带钢孔洞缺陷在线检测需求，结合机组现场条件，自主开发了恶劣危险环境下的高速带钢孔洞检测系统。
- Autoregressive channel models based on Kalman filtering can estimate the spectrum holes well，and are commonly used to approximate discrete-time random processes. 采用基于卡尔曼滤波的自回归信道预测模型可较好地估计频谱空洞，自回归模型常用于近似离散时间随机过程。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- He chiseled a hole in the door to fit a new lock. 他在门上凿了个孔，以便装一把新锁。
- detection of spectrum hole 频谱空洞检测
- The bird picked a hole in the ice with its beak. 那鸟在冰上啄出了一个洞。
- The child has picked a hole in his new jumper. 孩子的新毛衣上勾了一个洞。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- Stick your hand in and see what's in the hole. 把手伸进去，看看洞里有什么。
- The dog skins through the small hole in the wall. 那条狗勉强钻过小小的墙洞。
- The men in the hole sent up for more equipment. 在洞穴中的人们向上面要求再给他们一些设备。
- The mice have nibbled a hole in the cheese. 老鼠在奶酪上啃出了一个洞。
- I saw a rabbit dive into its hole. 我看见一只兔子钻进洞。
- She poked her finger into the hole. 她把手指插入孔中。
- Their dog bit a hole in my trousers. 他们的狗把我的裤子咬了个窟窿。
- He knocked a big hole in the wall. 他把墙撞出了一个大洞。
- He burned a hole on the ironing board. 他把熨衣板烧了一个洞。
