Amplitude normalized carrier synchronization lock detection method and apparatus

By extracting orthogonal components and performing addition and subtraction operations on the satellite telemetry and control transponder signals, a detection statistic is constructed. The decision threshold is determined by combining the false alarm probability and the length of the statistical data. This solves the problem of high complexity in carrier synchronization lock detection methods and achieves efficient carrier synchronization state decision.

CN122247579APending Publication Date: 2026-06-19HEBEI DONGSEN ELECTRONICS TECH +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI DONGSEN ELECTRONICS TECH
Filing Date
2026-05-22
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing carrier synchronization lock detection methods suffer from high computational complexity and resource consumption in aerospace telemetry and communication systems. In particular, the amplitude normalization detector's detection performance deteriorates when faced with sudden changes in signal power, making it unsuitable for resource-constrained application scenarios.

Method used

An amplitude-normalized carrier synchronization lock detection method is adopted. By extracting orthogonal components from the signal to be detected, performing addition and subtraction combination operations and normalization calculations, a detection statistic is constructed. The decision threshold is determined by combining the false alarm probability and the length of the statistical data to realize the decision of the carrier synchronization state.

Benefits of technology

It reduces the computational complexity of detection, improves the accuracy of carrier lock detection and resource utilization efficiency, and is suitable for resource-constrained aerospace telemetry and communication systems.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122247579A_ABST
    Figure CN122247579A_ABST
Patent Text Reader

Abstract

This application provides an amplitude-normalized carrier synchronization lock detection method and apparatus, belonging to the technical field of spaceborne telemetry, tracking, and command (TT&C) transponders. The method includes: acquiring a sampled signal of the signal to be detected and a preset false alarm probability; extracting orthogonal components from the sampled signal to obtain two orthogonal components; for each single sampling point in the sampled signal, performing addition and subtraction operations on the absolute values ​​of the two orthogonal components at that single sampling point to obtain a feature quantity; normalizing the feature quantity to obtain the detection statistic for that single sampling point; calculating the first expectation and first standard deviation of the detection statistic under carrier lock-out conditions; determining the length of the statistical data, calculating the average value of the detection statistic within the statistical data length, and calculating a decision threshold; and determining the carrier synchronization lock detection result of the signal to be detected based on the relative magnitude of the average value of the detection statistic and the decision threshold. This application can reduce the computational complexity of the amplitude-normalized detector.
Need to check novelty before this filing date? Find Prior Art