The Oerlikon Contraves 35 mm air defense system is a complex one (Figure 1). It works in a centralized mode and is mainly composed of:

1. SHORAR TCP - designated for search, detection, identification, and automatic target tracking. The SHORAR has the main role of managing the air space security and optimizing the air targets data to the fire control system Gun*Star Night.

2. Gun*Star Night is an automated subsystem designated to control two cannons. It is based on electro-optical tracking system and equipped with a computer to calculate ballistic trajectory and the timing of the fire release. Fire control system Gun*Star Night (FCU-GSN) provides the following main operations:

a) receives data on air targets at SHORAR TCP or its digital optical sight (DOS);

b) evaluates the potential air attack in the area of responsibility (in decentralized mode);

c) searches, finds and identifies the target;

d) tracking three-dimensional target (finders using laser and electron-optical system);

e) calculates angles of sight for guns;

f) forwards angles in gun sights.

3. Digital Optical Sight (DOS) is operated by a single operator. It is designated to search air targets and send data to GSN. DOS is the main Intel sensor when GSN works in decentralized mode and receives data only from this subsystem.

4. Anti-aircraft automatic guns (AOKs) comprises two 35 mm caliber and are designated to fire directly against air targets or field targets, controlled by GSN or independent.

Fig. 1 The system architecture