Method on echoed signal denoising of bathymetric sounding laser radar

Hua Cheng; Huachuang Wang; Ruijie Nie

doi:10.1117/12.975768

15 October 2012 Method on echoed signal denoising of bathymetric sounding laser radar

Hua Cheng, Huachuang Wang, Ruijie Nie

Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84172Q (2012) https://doi.org/10.1117/12.975768
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

As the ladar bathymetry is affected by many factors, its echoed signal contains a lot kinds of noises. There are the interference noise of laser, the clutter noise, the water-reflected noise, the underwater scattered noise, the electric noise and the synoptic disturbance noise after analyzing the echoed signal. Consequently, how to remove noise from the signal and how to accurately extract the useful distance information has the direct bearing on the effect of the ladar bathymetry. On the basis of kinds of noises and the features of the noises, this paper puts forward a echoed signal de-noising method by the way of wavelet decomposition and threshold processing. To begin with, it introduces some kinds of noise. Then, it talks over how to treat with the echoed signal according to the heterogeneities of the signal and the noise. The processing of echoed signal de-noising of ladar bathymetry makes it clear that this method can not only actively suppress the noise, but also effectively abstract the useful signal.

Citation Download Citation

Hua Cheng, Huachuang Wang, and Ruijie Nie "Method on echoed signal denoising of bathymetric sounding laser radar", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84172Q (15 October 2012); https://doi.org/10.1117/12.975768

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available