SKYSURV Monopulse Secondary Surveillance Radar (MSSR) — Mode S The SKYSURV MSSR is a fully integrated, state-of-the-art system that meets ICAO Annex 10, civil ATC and Air Defence operations requirements. It is a highly accurate, modular, flexible system that can be installed as standalone equipment or integrated with a new or existing Primary Surveillance Radar (PSR). Available in basic dual-channel or single-channel configurations, this 256NM radar easily upgrades to Mode S functionality by inserting modules into the interrogator and activating the corresponding software. A design, highly dependable commercial components and robust software result in minimal maintenance and maximum system reliability. MSSR Modular System SKRYSURV MSSR’s innovative design easily adapts to meet your requirements, including the use of the MSSR’s individual subsystems to upgrade existing older SSR systems. Major Subsystems Antenna Subsystem Dual Interrogator-Receiver Subsystem Control & Maintenance Monitoring Subsystem The SKYSURV MSSR can easily be built up from basic configurations to enhanced by incorporating processing modules and software upgrading functionality: Basic configuration - secondary surveillance radar operating in standardized 1,2,3/A, B, C, D modes of interrogation (SIF modes) Mode S UF11 all-call interrogation or intermodes 3/A/S and C/S Mode S surveillance system - elementary Mode-S interrogation capabilities, mode-S roll-call messages Mode S Level 2 and 5 - enhanced Mode S surveillance system with static scenario Large Vertical Aperture (LVA) Antenna Subsystem The LVA Antenna Subsystem is composed of an antenna pedestal, drive, changeover unit, frame and the LVA itself. The drive turns with an antenna and support frame. The antenna drive is fitted with dual asynchronous motors, gearbox, and two- or three-channel rotary joint and dual azimuth encoders. The LVA antenna operates in 1030 MHz (interrogation) and 1090 MHz (reception) frequencies. It is composed of a set of vertical column radiator dipoles fed by the horizontal feeder (created by a set of strip power dividers). To meet individual requirements, this product includes three types of LVA antennae with differing antenna gain, mechanical dimensions and a number of radiator columns. The LVA antennae available for your specific coverage requirements are: LVA-20 2-channel MSSR antenna (20-column radiators) LVA-21 3-channel MSSR antenna (21-column radiators) LVA-35 3-channel MSSR antenna (35-column radiators) Each LVA antenna has a main SUM (SIGMA) beam. DIF (DELTA) and BACK beams integrate to provide a Side Lobe Suppression (SLS) beam. The LVA-21 and LVA-35 antennae have a separate DIF beam which, together with the SUM beam, provides monopulse measurement of target azimuth. These antennae also have Omni (OMEGA) and BACK beams. Through the integration of an OMEGA and BACK beam, an SLS beam is cre

Dual Interrogator-Receiver Subsystem MSSR The Interrogator-Receiver Subsystem is the basic component of the SKYSURV MSSR. It contains all the necessary circuits to generate the interrogation, receive replies, identify targets, determine target bearing using monopulse techniques and process individual interrogation modes. The system's design minimizes the connection with other subsystems to decrease dependency. This approach enhances system modularity and maintainability. The cross-linked, dual-redundant subsystems include built-in test equipment (BITE) and internal diagnostics. The BITE detects system...