Division 4 UWB ONBOARD AIRCRAFT
United Kingdom
The values for maximum mean power spectral density (e.i.r.p.) and maximum peak power (e.i.r.p.) for short-range devices using UWB technology, with or without use of mitigation techniques are listed in the table below.
| Alternative mitigation techniques, such as the use of shielded portholes, may be used if they ensure at least an equivalent performance. | |||
| 7,25 to 7,75 GHz (Fixed Satellite Service) and 7,45 to 7,55 GHz (Meteorological Satellite) protection: – 51,3 – 20 × log10(10[km]/x[km])(dBm/MHz) for heights above ground of over 1 000 m, where x is the aircraft height above ground in kilometres, – 71,3 dBm/MHz for heights above ground of 1 000 m and below. | |||
| 7,75 to 7,9 GHz (Meteorological Satellite) protection: – 44,3 – 20 × log10(10 [km]/x[km]) (dBm/MHz) for heights above ground of over 1 000 m, where x is the aircraft height above ground in kilometres, and – 64,3 dBm/MHz for heights above ground of 1 000 m and below. | |||
| Technical requirements | |||
|---|---|---|---|
| Frequency range | Maximum mean power spectral density (e.i.r.p.) | Maximum peak power (e.i.r.p.)(defined in 50 MHz) | Requirements for mitigation techniques |
| f ≤ 1,6 GHz | – 90 dBm/MHz | – 50 dBm | |
| 1,6 < f ≤ 2,7 GHz | – 85 dBm/MHz | – 45 dBm | |
| 2,7 < f ≤ 3,4 GHz | – 70 dBm/MHz | – 36 dBm | |
| 3,4 < f ≤ 3,8 GHz | – 80 dBm/MHz | – 40 dBm | |
| 3,8 < f ≤ 6,0 GHz | – 70 dBm/MHz | – 30 dBm | |
| 6,0 < f ≤ 6,650 GHz | – 41,3 dBm/MHz | 0 dBm | |
| 6,650 < f ≤ 6,6752 GHz | – 62,3 dBm/MHz | – 21 dBm | notch of 21 dB should be implemented to meet the – 62,3 dBm/MHzf1 level |
| 6,6752 < f ≤ 8,5 GHz | – 41,3 dBm/MHz | 0 dBm | 7,25 to7,75 GHz (FSS and MetSat (7,45 to 7,55 GHz) protection) f2 7,75 to 7,9 GHz (MetSat protection) f3 |
| 8,5 < f ≤ 10,6 GHz | – 65 dBm/MHz | – 25 dBm | |
| f > 10,6 GHz | – 85 dBm/MHz | – 45 dBm | |
Annotations
Footnotes
- f1
-
Alternative mitigation techniques, such as the use of shielded portholes, may be used if they ensure at least an equivalent performance.
- f2
-
7,25 to 7,75 GHz (Fixed Satellite Service) and 7,45 to 7,55 GHz (Meteorological Satellite) protection: – 51,3 – 20 × log10(10[km]/x[km])(dBm/MHz) for heights above ground of over 1 000 m, where x is the aircraft height above ground in kilometres, – 71,3 dBm/MHz for heights above ground of 1 000 m and below.
- f3
-
7,75 to 7,9 GHz (Meteorological Satellite) protection:
– 44,3 – 20 × log10(10 [km]/x[km]) (dBm/MHz) for heights above ground of over 1 000 m, where x is the aircraft height above ground in kilometres, and – 64,3 dBm/MHz for heights above ground of 1 000 m and below.