一种基于相位偏移的高精度激光测距方法、系统及望远镜
By using a phase-shift-based method, an equivalent sampling point is constructed in the laser ranging telescope using a ramp signal and a dynamic reference voltage threshold. This solves the problem of low ranging accuracy caused by sampling blind spots and achieves higher measurement accuracy and resolution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SNDWAY TECH (GUANGDONG) CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing laser ranging telescopes have a fixed ADC sampling frequency, resulting in a large sampling blind zone and an inability to capture the time shift between adjacent sampling points, thus causing low ranging accuracy.
By generating a ramp signal with linear climbing characteristics and using a dynamically configured reference voltage threshold to intercept and compare the ramp signal, the laser emission drive signal is generated synchronously at the intersection time. By combining the step-adjustment of the reference voltage threshold, multiple equivalent sampling points are constructed during adjacent sampling cycles to obtain echo signal samples, and time-series reconstruction and synthesis are performed based on the time-domain offset.
Without increasing the hardware sampling frequency, the ranging accuracy and resolution were significantly improved, overcoming the technical defects of sampling blind spots and achieving higher waveform resolution and measurement accuracy.
Smart Images
Figure CN122085287B_ABST