Signal detection method, signal processing method and signal processing model

A signal detection method, comprising:

• preprocessing a signal, namely processing a signal point in a signal segment, to obtain a processed value of the signal point;
• and
• detecting whether the processed value exceeds a specified overflow threshold range, to select a different reprocessing method based on a detection result of the processed value,
• wherein selecting the different reprocessing method based on the detection result of the processed value comprises:
• when the processed value of the signal point exceeds the specified overflow threshold range, performing mapping encoding on the processed value of the signal point, wherein the mapping encoding comprises:
• performing N iterative mapping operations on the processed value of the signal point until the processed value of the signal point is within the specified overflow threshold range, obtaining a mapped marker and a mapped value, and encoding the signal point into N mapped markers+M mapped values, wherein M represents a type of the mapped value, and M≥1.