In order to analyze the back signals and the signal-noise-ratio for the detection of He density in thermosphere by means of resonant lidar,the effective backscattering cross-section of about 10-17m2 was obtained after computer simulation.

Influence of bubble concentration on lidar backscattering characteristic;

Study of bandwidth for suppressing seawater backscattering based on frequency filtering;

The light backscattering properties study of bubble film using Monte Carlo simulation;

This article introduces the measuring and the calculation of forward and backward scattering in some range of surface roughness and waviness of laser gyro mirror substrate and presents the effect of surface roughness and waviness on scattering.

This paper is based on long-term experimental data by backward scattering lidar for visibility.

Basing on laser backward scattering method,the backward scattering signal of digital receiver is measured in the laser′s transmission.

Principle of the determination system for 180°back scattering characteristic of the turbid media;

Aiming the application to torpedo wake homing, a new method is presented to detect warships based on the laser back scattering characteristic of wake bubbles.

After the spectral analysis of back scattering we can identify the bubbles by the differences between bubbles and water.