A threshold processing method for signal detection template of electromagnetic spectrum monitoring receiver

Abstract

The invention discloses a threshold value processing method for a signal detection template of an electromagnetic spectrum monitoring receiver, which belongs to the field of electromagnetic spectrum monitoring and the field of intelligent instruments. During the monitoring process, the template threshold is adjusted according to the actual situation, and a single spectrum template is derived into a template cluster containing many new templates. The present invention processes spectrum templates by means of morphological expansion, enabling users to adjust template thresholds according to actual conditions during the spectrum monitoring process, eliminating false alarms caused by signal offsets; the present invention derives a single spectrum template into a template containing many new templates The template cluster is easy to operate, and there are only two variables that the user needs to control; it improves the accuracy and flexibility of the test work, improves the practicability of the template threshold, and can effectively avoid false alarms caused by a small amount of distortion of the measured signal; The method has a low computational load and can be used in existing instruments without affecting the processing speed.

Description

technical field [0001] The invention belongs to the fields of electromagnetic spectrum monitoring and intelligent instruments, and in particular relates to a threshold value processing method for a signal detection template of an electromagnetic spectrum monitoring receiver. Background technique [0002] In the process of spectrum monitoring, if the pre-collected background spectrum template threshold is used, the measured background signal may be slightly offset from the collected template, and the edge is greater than the background template threshold, resulting in false alarms. Such as figure 1 shown. [0003] The spectral background template threshold is more flexible than the level threshold, and can achieve better signal detection results when the spectral background fluctuates. However, the threshold value of the spectrum background template of the existing instrument only takes into account the situation that the background spectrum is stable, and does not take int...

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Problems solved by technology

However, the threshold value of the spectrum background template of the existing instrument only takes into account the situation that the background spectrum is stable, and does not take into account that in the actual work process, due to the change of the spectrum background or the state of the instrument itself, the actual spectrum background of the test site will be Compared with the case where the template has a small amount of offset and distortion, it may eventually cause false alarms in the detection

[0004] Disadvantages of existing technical solutions: there is no way to solve this problem at present, and users can only use solidified spectrum templates, which affects the flexibility and practicability of the template threshold detection function in existing products, and can only be re-acquired when the template is found to be inappropriate template

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