Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Precise locating approach of the beacon based on gray gradient segmentation interpolation in satellite optical communications

Not Accessible

Your library or personal account may give you access

Abstract

Accurate location computation for a beacon is an important factor of the reliability of satellite optical communications. However, location precision is generally limited by the resolution of CCD. How to improve the location precision of a beacon is an important and urgent issue. In this paper, we present two precise centroid computation methods for locating a beacon in satellite optical communications. First, in terms of its characteristics, the beacon is divided into several parts according to the gray gradients. Afterward, different numbers of interpolation points and different interpolation methods are applied in the interpolation area; we calculate the centroid position after interpolation and choose the best strategy according to the algorithm. The method is called a “gradient segmentation interpolation approach,” or simply, a GSI (gradient segmentation interpolation) algorithm. To take full advantage of the pixels of the beacon’s central portion, we also present an improved segmentation square weighting (SSW) algorithm, whose effectiveness is verified by the simulation experiment. Finally, an experiment is established to verify GSI and SSW algorithms. The results indicate that GSI and SSW algorithms can improve locating accuracy over that calculated by a traditional gray centroid method. These approaches help to greatly improve the location precision for a beacon in satellite optical communications.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Accurate beacon positioning method for satellite-to-ground optical communication

Qiang Wang, Ling Tong, Siyuan Yu, Liying Tan, and Jing Ma
Opt. Express 25(25) 30996-31005 (2017)

A robust and precise centroid positioning method for the weak beacon spot in long-distance inter-satellite optical wireless communications

Qiang Wang, Lei Cui, Xuewei Wang, Liying Tan, and Jing Ma
Opt. Express 32(1) 325-338 (2024)

Approach for recognizing and tracking beacon in inter-satellite optical communication based on optical flow method

Qiang Wang, Siyuan Yu, Liying Tan, and Jing Ma
Opt. Express 26(21) 28080-28090 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (6)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (25)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved