| Similarity | Rank | |
|---|---|---|
| radars | 0.909 | 53900 |
| Radar | 0.768 | 27987 |
| ground-based | 0.745 | 65588 |
| satellites | 0.703 | 15579 |
| sonar | 0.699 | 35868 |
| altimeter | 0.690 | 72457 |
| UAV | 0.689 | 49002 |
| UAVs | 0.674 | 60175 |
| unmanned | 0.669 | 26624 |
| homing | 0.667 | 55772 |
| RADAR | 0.664 | 96523 |
| reconnaissance | 0.660 | 26532 |
| long-range | 0.659 | 25123 |
| shortwave | 0.659 | 72290 |
| VHF | 0.659 | 39561 |
| beacons | 0.658 | 43480 |
| space-based | 0.657 | 87153 |
| GPS | 0.656 | 6013 |
| antennas | 0.655 | 25002 |
| transponders | 0.654 | 75946 |
| infra-red | 0.654 | 68775 |
| telemetry | 0.649 | 47579 |
| UHF | 0.644 | 46401 |
| jammers | 0.643 | 91134 |
| infrared | 0.640 | 14360 |