Optima-3 Belarusian GNSS Distributed Jamming Complex

This variant is a remote-controlled distributed jamming system. The baseline system consists of nine transmitters (with some commonality with the Optima-2) and an ASU-PP (avtomatizirovannaya system upravleniya peredatchikami pomekh) automated control system. The number of elements is variable according to customer requirements. The ASU-PP runs off a 220 V, 50 Hz AC power supply and is used for remote activation of the distributed jammer fields. Situation data are monitored on the operator's workstation, including the jammer position information, which is shown on a terrain map. The jamming zones are presented in electronic form, showing the transmitter status and serviceability. The main elements of the Optima-3 are the operator's automated workstation and a control unit for associated command links. The workstation includes a computer with application software, LCD monitor, keyboard, mouse and uninterruptible power supply. The command link includes VHF radio and mobile telephone control equipment, a GSM antenna and a power supply unit. When controlled from a mobile telephone network (GSM-900/1800 standard), the Optima-3's remote-control range is limited only by the network coverage area, while its radio link gives a stand-off control range of 19-31 mi (30-50 km). Activation delay through the radio channel is no more than 5 seconds and less than 60 seconds through the GSM channel. The jamming subsystems includes a BPSS antenna unit, BPK power supply and control unit and BUS (blok upravleniya i svyazi) control and communications unit and jamming transmitter. Other equipment includes a directional VHF antenna with a 10-ft (3-m) long connection cable, a GSM antenna with a 3-ft (1-m) long connection cable, mains and battery power-supply cables. The Optima-3 is a dual-frequency system, with the output of its jammer reaching 20 W in each frequency. Its jamming waveform has a complex frequency and time structure that affects the GPS signal information component.