An origami-based Tightly Coupled Dipole Array (TCDA) is proposed for small satellite applications. The array formed by a two-layered structure using rigid and flexible substrates to enable accordion-like folding. TCDA operates across 0.4-2.4 GHz with VSWR < 3 at broadside 0.6-2.4 when scanning down 45∘ in the E-, D-, H-plane. 8 × prototype was fabricated Kapton Polyimide FR4 tested verify bandw...

The application of long baseline aided strap-down inertial navigation system (SINS/LBL) has been demonstrated to be an effective solution for accumulative position errors underwater vehicles (UVs). To address the inefficient positioning when available hydrophones are few in acoustic array, a hybrid tightly-coupled SINS/LBL is presented system. composed SINS, LBL and pressure sensor (PS). model ...

Abstract In this paper, we propose a fully tightly‐coupled multi‐sensor fusion framework termed FT‐LVIO, that fuses measurements from light detection and ranging (LiDAR), monocular camera an inertial measurement unit (IMU) simultaneously to achieve robust accurate state estimation in real time. FT‐LVIO is built atop the of error‐state‐iterated Kalman filter. To take full advantage complimentary...