1. Polynomial Filtering Algorithm Applied to Navigation Data Processing under Quadratic Nonlinearities in System and Measurement Equations. Part 1. Description and Comparison with Kalman Type Algorithms

   • O. A. Stepanov
   • Yu. A. Litvinenko
   • M. V. Basin

   OriginalPaper 29 December 2021 Pages: 205 - 223

2. Adaptive Unscented Kalman Filter for Tracking GPS signals in the Case of an Unknown and Time-Varying Noise Covariance

   • M. M. Kanouj
   • A. V. Klokov

   OriginalPaper 29 December 2021 Pages: 224 - 235

   

3. INS/GNSS Integration with Compensated Data Synchronization Errors and Displacement of GNSS Antenna. Experience of Practical Realization

   • N. B. Vavilova
   • A. A. Golovan
   • A. V. Fomichev

   OriginalPaper 29 December 2021 Pages: 236 - 246

   

4. Electrostatic Gyroscope in Spacecraft Attitude Reference Systems

   • B. E. Landau
   • A. A. Belash
   • V. N. Tsvetkov

   OriginalPaper 29 December 2021 Pages: 247 - 253

   

5. A Fast Search-Free Algorithm for Star Sensor Frame Identification by Star Configurations. A Version of Onboard Implementation

   • V. V. Barke
   • A. A. Venkstern
   • A. V. Yudaev

   OriginalPaper 29 December 2021 Pages: 254 - 264

   

6. From the R-7 Missile and the First Manned Mission into Space up to Permanently Manned Orbital Station

   • M. Yu. Belyaev

   OriginalPaper 29 December 2021 Pages: 265 - 280