In-flight MTF measurement for ResourceSat-2 LISS-III sensor

In-flight sensor Modulation Transfer Function (MTF) can be measured using ground based targets (natural/artificial) which satisfy the basic criteria. Meeting the specific conditions all the time is practically difficult. In this paper, we have explored Bi-resolution method to measure ResourceSat (RS)-2 Linear Imaging Self Scanner (LISS)-III sensor MTF. LISS-III sensor MTF was measured for three spectral bands (B2, B3 & B4) with corresponding LISS-IV bands as reference. MTF values determined for all three data sets found to meet the specifications and their variation were within 6.1% over the mean.