Reciprocity principle applicable to reflected radiance measurements and the searchlight problem

摘要

In a recent paper by Di Girolamo et al. [J. Geophys. Res. D 103,8795 (1998)] a heuristic argument was used to derive a reciprocity principle applicable to reflected solar radiation measurements.Here a formal derivation of this reciprocity principle is presented. It is also demonstrated that a purely spatial reciprocal relationship exists between one-dimensional radiative transfer theory and the light problem for horizontally homogeneous media.#1999 Optical Society of America OCIS codes: 010.1300, I20.0280, 290.5820, 120.5820.