Mutual collimation self-calibration for dual-comb ranging-based multilateral coordinate measurement.

We propose a self-calibration method for multilateration based on dual-comb absolute distance measurement. By performing mutual collimation measurements between multilateral measurement bases, we could measure the system parameters in a multilateration system with high precision and efficiency. We demonstrated a multilateral coordinate measurement system based on the proposed self-calibration method. The system realized rapid coordinate measurement with micron-level precision in both tested directions.