Multi-spectral camouflage
Multi-spectral camouflage is the use of counter-surveillance techniques to conceal objects from detection across several parts of the electromagnetic spectrum at the same time. While traditional military camouflage attempts to hide an object in the visible spectrum, multi-spectral camouflage also tries to simultaneously hide objects from detection methods such as infrared, radar, and millimetre-wave radar imaging.
German Marder 1A5 with Saab Barracuda mobile multi-spectral camouflage
The caterpillar of the eyed hawk-moth Smerinthus ocellatus is camouflaged to match a leafy background in both visible and infra-red light.
An example of individual multispectral camouflage. The showcased suit provides simultaneous camouflage in the VIS and LWIR wavelengths of the electromagnetic spectrum. The soldier thermal signature matches the surrounding environment. Credits: ProApto Camouflage
Stealth technology, also termed low observable technology, is a sub-discipline of military tactics and passive and active electronic countermeasures, which covers a range of methods used to make personnel, aircraft, ships, submarines, missiles, satellites, and ground vehicles less visible to radar, infrared, sonar and other detection methods. It corresponds to military camouflage for these parts of the electromagnetic spectrum.
F-117 stealth aircraft
PL-01 stealth tank
Surcouf French stealth frigate
The F-35 Lightning II offers better stealthy features (such as this landing gear door) than prior American multi-role fighters, such as the F-16 Fighting Falcon