PinnedIlya KorogodinWhere is a navigation chip in my iPhone?What is an average, typical, regular navigation receiver in 2022? Let’s open iPhones and discover how they realize GNSS positioningMay 9, 2022May 9, 2022
Ilya KorogodinGeneralized navigation signal modelGlobal navigation satellite systems (GNSS) of the second generation are dominated nowadays: GPS, GLONASS, Galileo, and Beidou. They have…Aug 3, 2022Aug 3, 2022
Ilya KorogodinTest Automation and CI for Navigation Receiver’s FirmwareIt’s just an interesting fact that the original Apollo 11 guidance computer source code for Lunar Module has 40,202 lines of assembler…Jul 6, 2022Jul 6, 2022
Ilya KorogodinXona Pulsar: Obvious and Not-so-Obvious Issues of Next-Gen GPSThe first Pulsar satellite had successfully lifted off just several hours before I started to write this text.May 29, 2022May 29, 2022
Ilya KorogodinDoes GPS transmit different data into LNAV and CNAV messages?Different navigation message protocols are used for different navigation signal type. This is true even for a single system like NAVSTAR…May 9, 2022May 9, 2022