Introduction

Compared with modern orientation methods such as inertial and satellite navigation, the bioinspired polarization orientation is based on the principle of insect navigation. Not only does it possess strong autonomy, good concealment, large working range, and long working time, but its error also does not accumulate over time. This book takes the application background as six rotor small unmanned aerial vehicles (UAVs) performing low altitude unmanned missions, and carries out research on the challenges faced by the autonomous orientation technology for small UAVs. Although the directional signals originate from natural polarization and are generally not affected by modern information warfare, the bioinspired polariztion compass is temporarily unavailable under complex environmental conditions such as encountering obstacles from clouds, tunnels, and buildings. Accordingly, the integrated orientation technique of the bioinspired polarization compass and inertial navigation system displays great significances in exploiting the natural polarization orientation principle and multi-source information fusion algorithms for fulfillong the autonomous orientation requirements of small UAVs and promoting their combat capabilities.