Abstract

The plane array imaging laser radar is the product of the combination of the area array imaging optical system and the range laser radar. With extended illumination and area array detection, the target can be measured in three dimensions without mechanical scanning. In this paper, a CMOS-type built-in optical mixer is used, which is a kind of matrix depth sensor. The size of a single pixel of the sensor chip determines its maximum resolution accuracy in two-dimensional distribution measurement, which also restricts the improvement of measurement accuracy to a certain extent. In this paper, a post-processing measurement method is proposed, which expands the processed data object from a single pixel to a regional pixel, transforms the measurement of displacement into the measurement of amplitude distribution changes, and effectively utilizes the cascaded characteristics between a single pixel and pixel area. The purpose is to break through the limitation of the size of a single pixel and thus improve the measurement accuracy. The validity of the method is verified by theoretical calculation and experimental measurements, and the measurement accuracy is improved by 6 times in practical test. This method can improve the measurement accuracy and performance of existing system equipment without breaking through the limitation of pixel physical size and will be highly interesting for practical applications.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Calibration method of three-dimensional plane array laser radar based on space-time transformation

Shuo Zhang, Lipeng Sun, Yongran Chen, and Yong Bi
Appl. Opt. 59(28) 8595-8602 (2020)

Improvement of range accuracy of range-gating laser radar using the centroid method

Yong Zhang, Yuan Zhao, Liping Liu, Jiang He, Chenfei Jin, Guangcan Mi, and Xiudong Sun
Appl. Opt. 49(2) 267-271 (2010)

Accuracy improvement of time-of-flight depth measurement by combination of a high-resolution color camera

Pengfei Yu, Shourui Yang, and Shengyong Chen
Appl. Opt. 59(35) 11104-11111 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation 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

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 (16)

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 (13)

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 (2)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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