by the planets. The presence of a circumsolar ring (i.e., a ring structure of dust originating from the outer Solar System that is resonantly trapped by the Earth in orbits near 1 a.u. from the Sun) has been proposed theoretically (e.g., [@Jackson89]). The sky brightness near the ecliptic plane, as observed with IRAS, is brighter in the Earth-trailing than in the leading direction [@Dermott94]. @Dermott94 showed, based on numerical simulations, that this brightness asymmetry is caused by a trailing blob of dust particles trapped in mean-motion resonances (MMRs) with the Earth. This Earth’s resonance structure has been confirmed using COBE/DIRBE observations [@Reach95]. The existence of a similar circumsolar ring at the orbit of Venus has also been confirmed based on the imaging data of the STEREO mission [@Jones13]. In addition to these small-scale structures on scales of a few to a few tens of degrees, finer-scale features associated with the orbits of periodic comets, the so-called cometary dust trails, have also been observed in the IRAS survey data [@Sykes86s; @Sykes92; @Reach00].

To determine the brightness distribution of the ZE and the spatial structure of the IPD, full-sky surveys obtained with IR satellites are particularly powerful (e.g., [@Hauser84; @Reach92; @Reach97; @Fixen02; 