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Technical Documents
HiRISE EDR & RDR Software Archive Volumes Software Interface Specification (Updated 25 Nov 2009) Software Interface Specification for HiRISE Experimental Data Record Products Software Interface Specification for HiRISE Reduced Data Record Products (Updated 25 Nov 2009) |
| Parameter | Performance | Comments |
| Ground Sample Distance (GSD) | 30 cm/pixel | From 300 km altitude |
| Telescope aperture | 0.5 m, f/24 | For resolution and SNR |
| Spectral range |
400 to 600 nm 550 to 850 nm 800 to 1000 nm |
Blue-Green (BG) Red Near infra-red (NIR) |
| SNR Blue-Green Red NIR |
Typically 100:1 Typically 200:1 Typically 100:1 |
Achieved with TDI, backside thinned CCDs,and 50 cm aperture |
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Swath Red Width Blue-Green &NIR |
>6 km >1.2 lm |
From 300 km altitude From 300 km altitude |
| Swath length | >2x swath width | Along track |
| Data precision | 14 bit A/D | 12 to 13 bit usable |
| Data compression | Real-time 14 to 8 bit Up to 16 x 16 binning Lossless compression at SSR |
Look-up table Increases areal coverage ~2:1 |
| Data storage | 28 Gbits | All channels |
| Number of pixels across swath | 20,264 Red 4,048 Green and NIR |
From swath and pixel scale |
| TDI line time | ≥76 μsec | To match ground track speed |
| CCD read noise | < 50 electrions rms at 22° C | Achieve SNR at low signal levels |
| FOV | 1.14° x 0.18° | |
| IFOV | 1 x 1 μrad | Detector angular subtense |
| Relative Radiometry | <1% pixel to pixel | Absolute 20% |
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