Hybrid distributed radar sea clutter analysis method and device
An analysis method and mixed distribution technology, applied in the field of signal processing, can solve the problems of complex parameter estimation of KK distribution model and impracticality of KK distribution model.
Active Publication Date: 2020-07-07
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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However, there are gamma functions and Bessel functions of the second type in the KK distribution model, which makes the parameter estimation of the KK distribution model complex, and it is difficult to directly solve the specific parameter values. However, there is a problem of local convergence in solving model parameters using numerical methods. Therefore, the KK distribution model is not practical in actual engineering
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[0092] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0093] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0094] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.
[0095] In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...
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The invention discloses a hybrid distributed radar sea clutter analysis method and device, and relates to the technical field of signal processing, and the method comprises the steps: obtaining radarsea clutter data; obtaining a target probability density function; determining each parameter in the target probability density function, and establishing an analysis model of radar sea clutter data;and obtaining statistical characteristics of the radar sea clutter data according to the analysis model. The target probability density function is determined according to the first probability density function corresponding to the first distribution model and the second probability density function corresponding to the second distribution model; the first distribution model can well describe there-trailing characteristic of the sea clutter in the sea detection scene by the high-resolution low-ground-clearance angle; the second distribution model can finely describe the echo amplitude of theradar sea clutter, the sea clutter analysis model established by adopting the method is low in mathematical complexity and has a more accurate fitting effect, and the practicability and applicabilityof the model are further improved.
Description
technical field [0001] The present invention relates to the technical field of signal processing, and more specifically, to a mixed-distributed radar sea clutter analysis method and device. Background technique [0002] When the radar detects the target, it can locate the target with the help of the target echo received by itself. However, the echo signal received by the radar includes not only the echo of the target, but also the electromagnetic echo generated by the interference objects around the target. Usually, these echoes from interfering objects are called radar clutter, among which sea clutter is the radar clutter caused by the ocean background. For radars working in marine environment, severe sea clutter will affect the detection and tracking performance of sea surface targets. Therefore, only by establishing an accurate and reasonable clutter model can we grasp the nature of sea clutter and improve radar performance. [0003] In related technologies, the KA dis...
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CPCG01S7/414
Inventor 杨斌黄默张圆圆王长元
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI