Related Experiment Video
Updated: Jun 8, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
Published on: May 1, 2018
Temporal pulse spreading of a return lidar signal
Abstract:
Most spaceborne lidar applications use cross-track or conical scanning to ensure a global coverage of the investigated areas: the return signal of laser pulses shot at an angle with the nadir is biased by a slanting effect that induces a temporal spreading of the received signal as compared with the return signal of a nadir shot. This paper gives the basic formulas of the return signal for both a topographic target (laser range finders) and a diffuse target (atmospheric lidars).
Related Concept Videos
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
Echo
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...
Rectangular and Triangular Pulse Function
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,

