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| Sistem za referencu stava i smera (AHRS)× | SGP4 TLE Пропагација× | |
|---|---|---|
| Oblast | Vazduhoplovstvo i svemir | Vazduhoplovstvo i svemir |
| Porodica | Process / pipeline | Process / pipeline |
| Godina nastanka≠ | 1940s | 1970s |
| Tvorac≠ | Aviation heritage | NORAD, USAF |
| Tip≠ | System | Propagation method |
| Temeljni izvor≠ | Savage, P. G. (2007). Strapdown Inertial Integration Technology (2nd ed.). Strapdown Associates. link ↗ | Vallado, D. A., Crawford, P., Hujsa, R., & Kelso, T. S. (2006). Revisiting Spacetrack Report Number 3. In AIAA/AAS Astrodynamics Specialist Conference. DOI ↗ |
| Drugi nazivi | AHRS system, attitude reference, heading sensor | SGP4, TLE propagation, simplified perturbations |
| Srodne | 3 | 3 |
| Sažetak≠ | An Attitude Heading Reference System (AHRS) is a complete inertial navigation subsystem that estimates and outputs the three-dimensional orientation (attitude) and heading of a vehicle or platform. AHRS combines measurements from accelerometers, gyroscopes, and often magnetometers through sensor fusion algorithms (typically Kalman filters or complementary filters) to provide a drift-free, fast attitude estimate. AHRS is standard in aviation, marine navigation, and modern autonomous systems. | SGP4 (Simplified General Perturbations 4) is a rapid orbital propagation method that predicts satellite position and velocity from Two-Line Element (TLE) sets published by NORAD. Developed in the 1970s, SGP4 accounts for atmospheric drag, gravitational perturbations, and solar radiation pressure using simplified analytical models. SGP4 is the de facto standard for space surveillance, conjunction assessment, and satellite tracking. |
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