Modular configurated design of strapdown inertial units

Various modular configurated design approaches for development of devices and components of strapdown inertial units (SIU) - assemblies of sensitive elements (ASE), modules of service electronics, module of information exchange and control (MIEC) - are described in this paper. Basic ASE are under development, each of which contains three fiber-optical gyroscopes (FOG) and three pendulous accelerometers. Each ASE variant is based on FOG with specific accuracy levels (0.3; 0.05 or 0.01 °/hr). Two basic SIU types with different device structure are considered: three-channel and six-channel units based on one or two ASE, respectively. Design features of such monoblock and two-block units are studied; their main technical characteristics are estimated.