Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1540-3
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2008.4547117
