TABLE OF CONTENTS The instrument to be designed in this chapter utilizes a 1-m aperture antenna. But before focusing on that size, a broader discussion is warranted, and apertures ranging between 0.5m and 4m are considered. The background is the set of formulas derived in Chapter 12 and summarized in Table 12.1.
In Table 13.2, calculations based on these formulas are carried out for the given frequencies and antenna sizes. The notation in the table is self-explanatory when referring to Chapter 12. The table includes instrument options ranging from relatively simple systems with small antennas resulting in benign resource demands to the host satellite, to difficult systems with large antennas and indeed severe resource requirements.
| D( m) | FPS(km) | FPL(km) | ?(msec) | RPM | ? T(K) | F(GHz) |
|---|---|---|---|---|---|---|
| 0.5 | 96.2 | 159.9 | 209.1 | 3.6 | 0.08 | 10.65 |
| 0.7 | 68.7 | 114.2 | 106.7 | 5.0 | 0.11 | |
| 1 | 48.1 | 79.9 | 52.3 | 7.0 | 0.16 | |
| 1.2 | 40.1 | 66.6 | 36.3 | 8.5 | 0.19 | |
| 1.5 | 32.1 | 53.3 | 23.2 | 10.7 | 0.24 | |
| 2 | 24.1 | 40.0 | 13.1 | 14.2 | 0.32 | |
| 3 | 16.0 | 26.6 | 5.8 | 21.3 | 0.48 | |
| 4 | 12.0 | 20.0 | 3.3 | 28.4 | 0.65 | |
| 0.5 | 54.8 | 91.0 | 67.8 | 6.2 | 0.14 | 18.7 |
| 0.7 | 39.1 | 65.0 | 34.6 | 8.7 | 0.20 | |
| 1 | 27.4 | 45.5 | 17.0 | 12.5 | 0.28 | |
| 1.2 | 22.8 | 37.9 | 11.8 | 15.0 | 0.34 | |
| 1.5 | 18.3 | 30.4 | 7.5 | 18.7 | 0.42 | |
| 2 | 13.7 |
