Research Article
Real-Time Hardware-in-the-Loop Tests of Star Tracker Algorithms
Table 7
DS1 test cases characteristics.
| | DS1 test case 1 | DS1 test case 2 | DS1 test case 3 |
| Orbit | Equatorial | Polar | Sensor boresight orientation (w.r.t. orbit) | Radial (zenith) | Perpendicular to orbit plane | Radial (zenith) | Inertial attitude angles (deg) (3-1-3 Euler sequence) | | | | Rot.1 | Linear variation (360-deg range) | 90 | 0 | Rot.2
| Linear variation (360-deg range) | 0 | 0 | Rot.3 | Stepwise constant 90; −90; +90; | Linear variation (360-deg range) | Stepwise constant 0; −180; 0; | Frame rate of simulated star fields (Hz) | 10 | Number of stars in simulated star fields (mean/std over 1 orbit) | 138/74.0 | 152/60.4 | 143/86.1 | Simulated stars size (LCD display pixels) 1 star imaged as a single pixel, >1 star imaged as a pixel strip(mean/std over 1 orbit) | 1.5/0.5 | 1.1/0.3 | 1.3/0.6 |
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