Spectral ratio lidar for objects detection

In this paper a new technique of objects measurement based on spectral ratio lidar system has been proposed and developed to make horizontal-path laser measurements of objects. The two or more wavelengths laser transmitter operates within and adjacent to the sensitive bands exhibited by the characteristics of each object, the result could be used to establish inversion models of the laser transmitting backscatter signals. The application value and the key techniques of the spectral lidar are analyzed. The laser spectral ratio model is established and the lidar system is designed, the lidar measurements were down to testify its feasibility. Also issues to approach the final goal of this new technique are discussed.