With the rapid development of wireless communication system and more and more attention paid to life security, the antiquated wireless location technology has new vital force and brings a lot of new problem. So it becomes a hot spot in location field. Under the common efforts, the wireless location technology is developing fast. Its effects
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The development of deep space network has been promoting a new technique of multi-receivers: antennas arraying technique, which aims at impoving the quality of signal. Making use of multiple receivers, antennas arraying would bring a certain combining SNR gain. Besides that, there are several advantages: the first advantage is the reduction of the cost; the
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This thesis studies the time delay estimation (TDE) under the situation of passive source positioning based on the received wireless signals. The research object is to find algorithms aimed at the TDE of narrow-band signals. With the rapid development of wireless technology, wireless positioning service is more and more bound up with people’s daily life.
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In this paper, acoustic emission technique is used to coordinate orientation of the sourceof vibration, acoustic emission sources by the time difference to reach the sensor positioning methods to achieve such a passive vibration of the source position. The traditional acoustic emission technology combined with the passive position, through the large number of experiments to
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This thesis is mainly concerned with the time delay estimation (TDE) issue under the alpha-stable distribution noise environment by studying the conrrentropy theory. The research object is to find new TDE algorithms and improve traditional algorithms based on the conrrentropy theory. The TDE weighs very much in terms of the extraction of model parameters in
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