Doppler navigation
| system
| Doppler navigation | |
| opt. | Doppler-Navigation |
| system | |
| gen. | Methode; System; Anlage |
| refrig. | System |
| tech. | Anlage; Anordnung; Bauart; Netz; Netzverbund; Bezugssystem datum |
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| Doppler-Navigation m | |||
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Doppler navigation : 5 phrases in 3 subjects |
| Communications | 2 |
| Technology | 2 |
| Transport | 1 |