Method and device for determining exponential distribution parameters based on outlier elimination

An exponential distribution and parameter determination technology, applied in the field of communication, can solve problems such as the complexity of the estimation process and the impact on the accuracy of the estimation results, and achieve the effects of simple implementation process, improved accuracy, and wide application range

Active Publication Date: 2013-10-30
哈尔滨工大雷信科技有限公司
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Problems solved by technology

[0007] It can be seen that no matter which of the above methods is used, the parameter estimation process will be affected by the target sample or clutter sample, which makes the estimation process complicated and affects the accuracy of the final estimation result

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  • Method and device for determining exponential distribution parameters based on outlier elimination
  • Method and device for determining exponential distribution parameters based on outlier elimination
  • Method and device for determining exponential distribution parameters based on outlier elimination

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Embodiment Construction

[0029] According to an embodiment of the present invention, a method for determining parameters of an exponential distribution based on outlier elimination is provided.

[0030] Such as figure 1As shown, the method for determining the exponential distribution parameters based on outlier elimination according to the embodiment of the present invention includes:

[0031] Step 1, determining the exponential distribution sequence parameters of the first noise sequence, and calculating the outlier elimination threshold coefficient according to the predetermined false alarm probability;

[0032] Step 2: Screen each data in the first noise sequence according to the outlier elimination threshold coefficient, and generate the second noise sequence according to the retained data (after screening, some data may be deleted, at this time, namely generating a second noise sequence based on the remaining data after screening);

[0033] Step 3, determine the exponential distribution sequenc...

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Abstract

The invention discloses a method and device for determining exponential distribution parameters based on outlier elimination. The method comprises the first step of determining the exponential distribution sequence parameters of a first noise sequence, and calculating an outlier eliminating threshold coefficient according to a false alarm probability given in advance, the second step of carrying out screening processing on all the data in the first noise sequence according to the outlier eliminating threshold coefficient, and generating a second noise sequence according to reserved data, and the third step of determining the exponential distribution sequence parameters of the second noise sequence, judging whether the second noise sequence meets the condition of convergence, adopting the exponential distribution sequence parameters of the first noise sequence as a definitive result if the second noise sequence is judged to meet the condition of convergence, and adopting the second noise sequence as the first noise sequence and carrying out the second step and the third step if the second noise sequence is judged not to meet the condition of convergence. According to the method and device for determining the exponential distribution parameters based on the outlier elimination, the interference of noise, clutter and other factors on parameter estimation can be avoided, the accuracy of the parameter estimation is effectively improved, the realization process is simpler, and the method and device for determining the exponential distribution parameters based on the outlier elimination can be suitable for more scenes.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for determining exponential distribution parameters based on outlier elimination. Background technique [0002] When the radar detects the target, it mainly depends on the analysis of the radar echo. Usually, the radar echo signal mainly contains noise, clutter and target signal. The target signal and clutter signal mainly come from the excitation of the radar transmission signal, while the noise signal generally comes from the inside of the receiver. From the statistical point of view, the noise signal processed by the square law detector obeys the exponential distribution. In different radar systems, target signals and clutter signals will appear differently according to their scattering mechanism and statistical characteristics. For example, the target statistical properties of most radars obey the X 2 distribution, while the lognormal or Weibull distributions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
Inventor 杨强
Owner 哈尔滨工大雷信科技有限公司
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