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This paper proposes a new way to detect tank level based on the auto-adaptive double-threshold Canny operator, considering IR imaging of tank level and aiming at the problem of the detection of tank level. The adaptive double-threshold edge detection operator based on Canny criteria can set the threshold level according to different image histogram feature automatically, to avoid the artificial choice...
This paper distinguishes ship target from chaff by their difference in depolarization characteristics using fully polarized dual-channel radar which transmits vertical and horizontal polarization wave alternately and receives co-polarization and cross-polarization components simultaneously with two channels. It recognize the target by taking advantage of the difference of the vertical and horizontal...
One new approach for detection tank level is investigated based on the auto-adaptive double-threshold Canny operator, considering IR imaging of tank level and aiming at the problem of the detection of tank level. Edge operator of tank level based on the auto-adaptive double-threshold Canny operator can set double-threshold automatically, according to different tank level IR imaging gray gradient histogram's...
This paper discusses a method of recognizing target from unknown and time-varying cluster in polarization domain, by receiving from both vertical and azimuth channel of full polarization radar. First, the principle of the cluster removing algorithm, the determination of original parameter and calculating step are presented. Then, the signal after being removed cluster is simulated, and the result...
The paper studies anti-collision algorithm based on binary search algorithm in RFID system (Radio Frequency Identification) and proposes a new algorithm-the dynamic anti-collision algorithm in the RFID system which reduces the bytes number of each actual data of transmission and the search frequency for the label of selection after the first time selection. In the process of reading labels, every...
Chaff is a constantly used method of passive disturb, and it is difficult to find an efficient method to depress and recognize chaff in both time and frequency domain. This paper tries to recognize chaff and target like warship in polarization domain under the theoretical analysis of the polarization scattering cross section of chaff. In order to find target more exactly, methods of non-linear polarization...
This paper proposed a target recognition method to distinguish ships from chaff by polarization information for the fully polarized dual-channel radars with low resolution. The method expands the original single polarization radar system to dual polarization radar system with both left and right circular polarizations by receiving and processing the foil polarization information of radar echoes. It...
In Warfare on the sea, passive interferences include not only chaff but also surrounding atmosphere such as rain and snow, these factors will influence final recognition of targets. This paper solves the problem by polarization theory. This method is based on the radar which can receive both left and right circularly polarized wave and obtain the full polarization information of echoes. Firstly, the...
This paper proposed a target recognition method to distinguish ships from chaff by polarization information, aiming at fully polarized dual-channel radars with low resolution. The method expands the original single polarization radar system to dual polarization radar system with both left and right circular polarizations by receiving and processing the full polarization information of radar echoes...
This paper derived the polarization scattering matrix of both warship target and interferential chaff conditioned on the exit of rain and snow cluster, and furthermore, proposed a method to recognize chaff and warship by analyzing their corresponding polarization information. This method mainly aims to radar, which can receive both left and right circularly polarized wave, to catch the full polarization...
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