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发明公开
CN108120440A 基于工作周期化的频率复用电磁信号的位置或方位确定 无效 - 撤回

基于工作周期化的频率复用电磁信号的位置或方位确定
摘要：
本发明涉及一种基于工作周期化的频率复用电磁信号的位置或方位确定。三轴磁源(110)产生频率复用电磁信号，该频率复用电磁信号在通过工作周期限定的时间间隔的第一子集和第二子集(406，407)期间分别以第一功率和第二功率传输。第一功率高于第二功率。基于在时间间隔的第一子集期间通过三轴磁传感器以第一功率接收的频率复用电磁信号来确定三轴磁传感器(105)相对于三轴磁源的位置或方位。在一些情况下，三轴磁源包括正交线圈组(111，112，113)和电源(125)，电源交替地施加较高功率和较低功率来驱动正交线圈组，以产生频率复用电磁信号。
摘要（英）：

The invention relates to position or orientation determination based on duty-cycled frequency multiplexed electromagnetic signals. A three-axis magnetic source (110) generates the frequency multiplexed electromagnetic signals for transmission at a first power and a second power during respective first and second subsets (406, 407) of time intervals defined by a duty cycle. The first power is higher than the second power. A position or an orientation of a three-axis magnetic sensor (105) relative to the three-axis magnetic source is determined based on the frequency multiplexed electromagneticsignals received by the three-axis magnetic sensor at the first power during the first subset of time intervals. In some cases, the three-axis magnetic source includes orthogonal coils (111, 112, 113)and a power supply (125) alternately applying higher and lower powers to drive the orthogonal coils to generate the frequency multiplexed electromagnetic signals.

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