Modulation Transfer Function Model of Scanning TDI Sensors with Oversampling-Superposition

Author

Shi, Xiaowei ; Wu, Xingwu ; Xu, Xiaojian

Author_Institution

Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing

fYear

2008

fDate

12-15 May 2008

Firstpage

652

Lastpage

656

Abstract

In this paper we develop a modulation transfer function (MTF) model of a scanning time-delay-integration (TDI) sensor with oversampling-superposition. Owing to the wide applications of TDI focal plane array (FPA) and oversampling-superposition technique in improving the signal-to-noise ratio (SNR), the current model provides theoretic foundation for researchers and engineers to evaluate the effect of the two above techniques on sensor s spatial resolution.

Keywords

focal planes; image resolution; image sampling; optical information processing; optical transfer function; FPA; focal plane array; modulation transfer function model; oversampling-superposition technique; scanning TDI sensor; spatial resolution; time-delay-integration sensor; Image sensors; Layout; Optical sensors; Sampling methods; Satellites; Sensor arrays; Sensor systems; Signal to noise ratio; Spatial resolution; Transfer functions; MTF; TDI; oversampling-superposition; scanning sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE

Conference_Location

Victoria, BC

ISSN

1091-5281

Print_ISBN

978-1-4244-1540-3

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2008.4547117

Filename

4547117