| 1. | Secondly , other parameters such as temperature difference and emissivity of target and sky , molecular absorptive transmittance , instantaneous field of view ( ifov ) , contrast threshold and radiant wavelength are discussed in detail 然后,对目标天空背景温差、发射率,气溶胶衰减系数,瞬时视场、对比度探测阈值以及辐射波长等参数作了详细讨论。 |