<正>Two variants of systematic resampling(S-RS)are proposed to increase the diversity of particles and thereby improve the performance of particle filtering whe
<正>To obtain frequency-temperature compensation in a sapphire loaded cavity for hydrogen maser,a dielectric named SrTiO_3 is employed whose temperature coeffic
A novel multi-layer planar antenna array to achieve multi-polarized radiation is developed. U-shaped coupling slots are embedded in the ground plane to extend t