Details are emerging of the configuration of intelligence systems being developed for three Gulfstream IV (GIV) business jets recently selected by the Israeli air force to replace its ELINT configured Boeing 707s.

Israel Aircraft Industries subsidiary Elta is the main contractor on the communications and electronic intelligence (COMINT and ELINT) systems, which will perform the "full spectrum of missions". Sensors to be installed include a variety of receivers to intercept signals from all emitters.

The COMINT station will have two types of operator station. One will enable the user to scan preselected radio frequencies while the other will allow the operator to focus on pertinent traffic and record it for further analysis. The ELINT station will scan for radar emissions.

A "fusion computer" will be used to manage the sensors and create a picture of the emitters, with their strength and bearings. The system can also receive data from other airborne platforms, naval and ground-based assets.

A fast, secure datalink will enable the platform to relay the full electronic order of battle picture to Israeli air force ground and airborne command posts. From 36,000ft (11,000m), the GIV will be able to monitor emitters at a range of around 450km (240nm).

The Israeli air force had planned to incorporate the command and control function performed by now-grounded Northrop Grumman E-2 Hawkeyes in the surveillance platform. The removal of the Boeing 737 from the platform competition means this proposal has been dropped as a result of the GIV's size limits. The GIVs will not be equipped with a radar.

Source: Flight International