Although research continued at the SCL in the passive detection of infrared emitted from heated aircraft engines, Blair became convinced that practical detection systems would involve reflected radio signals.
12.
On passive detection the radiated noise of a unit is only apparent across the layer in a narrow cone : undetectable unless units pass almost directly over or under each other.
13.
Multi-mode passive detection systems ( MMPDS ), based upon muon tomography, are currently in use by Decision Sciences International Corporation at Freeport, Bahamas, and the Atomic Weapons Establishment in the United Kingdom.
14.
The SSTDS combines the passive detection of the Torpedo Warning System ( TWS ) that finds, classifies, and tracks torpedoes with the hard-kill capability of a Countermeasure Anti-Torpedo ( CAT ), an encapsulated miniature torpedo designed to locate, home in on, and destroy hostile torpedoes.
15.
The Dragunov is issued with a quick-detachable PSO-1 bullet drop compensation ( BDC ) elevation adjustment knob and an illuminated rangefinder grid that can be used up to, a reticle that enables target acquisition in low light conditions as well as an infrared charging screen that is used as a passive detection system.
16.
In June, " Algonquin " participated in MARCOT 1 / 83 near Bermuda, focusing on passive detection capabilities of ASW . In October, " Algonquin " participated in MARCOT 2 / 83, an ASW exercise focusing on shallow water detection, mainly staged in the Gulf of St . Lawrence.
17.
The previous Tomahawk Anti-Ship Missile, retired over a decade earlier, was equipped with inertial guidance and the seeker of the Harpoon missile and there was concern with its ability to clearly discriminate between targets from a long distance, since at the time Navy sensors did not have as much range as the missile itself, which would be more reliable with the new seeker's passive detection and active millimeter-wave radar.
18.
Even with the possibility of cyber and electronic attack to hack or jam data-links, passive detection systems to locate aircraft based on their electronic emissions, and long-range anti-radiation missiles, the flexibility of " network-centric " cooperative engagement concepts allows additional systems and platforms to be " plugged or unplugged " as required, offering increased survivability and growth potential for new methods of countering countermeasures to be integrated into new or existing concepts.
19.
The interfaces include improved IRST capabilities for enhanced passive detection and tracking as well as better off-boresight launch capabilities, one MFCD and HOTAS . The N019M1 radar, a heavily modified and upgraded digital version of the N019 radar, is used instead of the standard N010 Zhuk-M used on the MiG-29SMT . The upgrade also includes a structural life-extension program ( SLEP ), the overhaul, upgrade of the original engines and the installation of an in-flight refuelling probe.
