What technology does Reflectorless EDM typically employ?

Reflectorless Electronic Distance Measurement (EDM) technology primarily utilizes phase-shift or time-of-flight laser technology to accurately determine distances. This method involves sending a laser beam towards a target, which is then reflected back to the instrument. The EDM calculates the distance by measuring the time it takes for the laser signal to travel to the target and back, or by analyzing the phase shift of the returned signal relative to the emitted signal.

This approach allows for precise measurements without the need for a physical reflector on the target point, making it particularly useful in surveying applications where access to the measurement point is limited or the installation of reflectors is impractical. This technology is commonly used in various surveying instruments, contributing to the efficiency and accuracy of distance measurements in fieldwork.