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1. 发明授权

US07664512B2 Datalink throughput reduction via energy detection 失效
标题翻译：数据通过能量检测降低吞吐量
公开(公告)号：US07664512B2
公开(公告)日：2010-02-16
申请号：US11463804
申请日：2006-08-10
申请人： Hyo K Chung , Phuong H Le , John M Parker , David L Reid , Mark A Robertson
发明人： Hyo K Chung , Phuong H Le , John M Parker , David L Reid , Mark A Robertson
IPC分类号： H04W24/00
CPC分类号： G01S5/0226
摘要： A geolocation system (10) includes an emitter (12), a plurality of collection nodes (14,16,18), and a control station (20). Each collection node includes a receiver (24) that is operable to receive signals transmitted from the emitter (12), generate a reduced data stream that includes only signal data, and communicate the reduced data stream to the control station (20) along with navigation data. The receiver (24) identifies signal data by detecting an energy level of the raw collection data. More specifically, the receiver (24) determines a bandwidth and a signal-to-noise ratio of each portion of the collection data, and identifies each portion as including signal data if both the bandwidth and the signal-to-noise ratio exceed predetermined threshold amounts. The receiver (24) includes a digital signal processing component (36) for performing calculations used by the receiver (24) to determine the bandwidth and the signal-to-noise ratio.
摘要翻译：地理定位系统（10）包括发射器（12），多个收集节点（14,16,18）和控制站（20）。每个收集节点包括可操作以接收从发射器（12）发送的信号的接收器（24），产生仅包括信号数据的减小的数据流，并且将导致数据流传送到控制站（20）的导航数据。接收器（24）通过检测原始采集数据的能级来识别信号数据。更具体地，接收器（24）确定收集数据的每个部分的带宽和信噪比，并且如果带宽和信噪比都超过预定阈值，则将每个部分识别为包括信号数据金额接收机（24）包括数字信号处理部件（36），用于执行由接收器（24）使用的计算以确定带宽和信噪比。

2. 发明授权

US08285079B2 Method for highly accurate estimation of motion using phase correlation 失效
标题翻译：使用相位相关度高精度估计运动的方法
公开(公告)号：US08285079B2
公开(公告)日：2012-10-09
申请号：US12728025
申请日：2010-03-19
申请人： Mark A Robertson , Ming-Chang Liu
发明人： Mark A Robertson , Ming-Chang Liu
IPC分类号： G06K9/32
CPC分类号： G06T7/248
摘要： An image alignment method includes computationally efficient methods of achieving high-accuracy local motion estimates by using phase correlation. The method also estimates motion reliability that allows a generic robust model fitting algorithm to produce more accurate results while operating much more efficiently. One of three methods are used to determine sub-pel motion estimation with improved accuracy. Each of the sub-pel motion estimation methods uses phase correlation, and are based on fitting computationally efficient 2-D quadratic surfaces to a phase correlation surface. A pre-filter is applied which shapes the phase correlation surface to enable appropriate fitting to the quadratic surface. Bias is also compensated for prior to applying a sub-pel motion estimation method. The method also estimates the reliability of the sub-pel motion estimates determined using phase correlation.
摘要翻译：图像对准方法包括通过使用相位相关来实现高精度局部运动估计的计算有效的方法。该方法还估计运动可靠性，允许通用鲁棒模型拟合算法在更有效地运行时产生更准确的结果。使用三种方法之一来确定提高精度的子像素运动估计。每个子像素运动估计方法使用相位相关，并且基于将计算有效的2-D二次曲面拟合到相位相关表面。应用预滤波器，其形成相位相关表面以使得能够适当地拟合到二次曲面。在应用子像素运动估计方法之前，偏置也被补偿。该方法还估计使用相位相关确定的子像素运动估计的可靠性。

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