Design and Development of Array POS for Airborne Remote Sensing Motion Compensation

Multi-antenna airborne remote sensing systems have received more attention recently because they can realize high-resolution three-dimensional (3-D) imaging, such as array Synthetic Aperture Radar (SAR). Their high-precision imaging needs multi-antenna motion and relative between antennas. However, the existing facility technology hardly meet measurement precision demand of SAR. To solve this problem, an Position Orientation System (POS) for compensation is designed developed. It composed a POS, several small-size Inertial Measurement Units (IMU), 6-D deformation system based on Fiber Bragg Grating (FBG) sensors. Firstly, transfer alignment method used to measure POS. Then, conversion from POS SAR presented obtain Finally, ground experiment results identify that accuracies position, attitude, flexible baseline length antennas are superior 3 cm, 0.01°, 0.1 mm, respectively, which