| Similarity | Rank | |
|---|---|---|
| infrared | 0.943 | 14360 |
| Infrared | 0.795 | 34482 |
| sensors | 0.766 | 8505 |
| sensor | 0.762 | 7125 |
| ultra-violet | 0.756 | 90146 |
| imager | 0.755 | 87394 |
| IR | 0.747 | 18197 |
| detectors | 0.739 | 18911 |
| electro-magnetic | 0.729 | 90843 |
| detector | 0.728 | 15340 |
| ultraviolet | 0.722 | 22360 |
| electromagnetic | 0.719 | 16569 |
| ultrasonic | 0.716 | 34927 |
| hand-held | 0.714 | 28371 |
| microwaves | 0.713 | 41029 |
| high-power | 0.712 | 65048 |
| optical | 0.706 | 8261 |
| ground-based | 0.706 | 65588 |
| laser | 0.704 | 4469 |
| lasers | 0.700 | 17848 |
| light-emitting | 0.695 | 81527 |
| wavelengths | 0.693 | 27565 |
| strobe | 0.689 | 41676 |
| reflector | 0.688 | 34800 |
| photoelectric | 0.688 | 95795 |