The Critical Design Review (CDR) stage for AN/SPY-1 radar Solid-State Switch Assembly's (SSSA) high voltage modulator completed Aug. 26, confirming that the design is expected to meet performance requirements.
SSSA is intended to replace the current vacuum tube modulator switches in the AN/SPY-1 radar transmitter with functionally similar, highly reliable solid-state switches. The AN/SPY-1 radar constitutes the primary air and surface search radar for the AEGIS Weapons System.
The SSSA effort is a partnership among the U.S. Navy's Program Executive Office for Integrated Warfare Systems (PEO IWS), the Office of Naval Research (ONR), Raytheon Integrated Defense Systems, and the American Competitiveness Institute.
"This project directly supports the fleet's need for a more reliable radar by transitioning solid state technologies from ONR directly into our sailors hands, replacing critical components that were designed to fail often with an assembly they may never have to work on," said Capt. Doug Small, PEO IWS's Above Water Sensors major program manager and chair of the SSSA design review.
| 9/18/2014 | AN/SPY-1 Solid-State Switch Assembly completes Critical Design Review |
| from : | Naval Sea Systems Command Office of Corporate Communications |
Part of MMSP Development
3232: Multi-Mission Signal Processor Justification Book - 0604501N_113.pdf
A. Mission Description and Budget Item JustificationMulti-Mission Signal Processor (MMSP): The development of Multi-Mission Signal Processor (MMSP) provides Anti-Air Warfare (AAW)/Ballistic Missile Defense (BMD) Multi-mission capability for DDG 51 class ships as part of Aegis Modernization Program. This capability will be utilized for DDG 113 and follow new construction and Aegis Ashore. Modifies SPY-1D Transmitters to enable dual beam for reduced frame times and better reaction time, and provides stability for all D (V) waveforms and avoid operational degradation.The SPY-1 radar system detects, tracks and supports engagements of a broader range of threats. MMSP improves performance in littoral, ducted clutter environments, and in electronic attack (EA), and chaff environments and provides greater commonality in computer programs and equipment. This effort also provides for the development of a Solid State Switch Assembly (SSSA) through an ONR/MANTECH project, MMSP Commercial Off-The-Shelf (COTS) refresh, radar capability upgrades, reliability improvements, and ship-based Non-Cooperative Target Recognition (NCTR).
Other Work on Radar Solid State Modulators
A Solid-state Power Supply/Modulator SystemNew advances in high power insulated-gate bipolar transistor and FET technology have made the design of solid-state high power transmitters possible. Thyratrons have been used traditionally as the main high power switch in radar modulators. Recently, solid-state switches in 250 to 1000 kW magnetron and klystron transmitters have become a reality.
Diversified Technologies. Inc., Bedford, MA
Solid State Radar Modulators.pdfHigh Performance, Solid-State High Voltage Radar Modulators
IEEE Xplore Abstract - High Performance, Solid-State High Voltage Radar Modulators
Switching power supplies and solid-state high voltage modulators are being used to upgrade conventional tube-type radar modulators, extending their operating lifetimes. The new technology is cost-effective, improves reliability, and delivers better protection to the RF amplifier than conventional transmitter designs.
In 2003, DTI upgraded the X-band radar transmitters in the Cobra Judy system on the USNS Observation Island. DTI built the complete transmitter, including all electronics required from ship power to modulating the two 100 kW average power TWTs. Based on the success of this effort, DTI is employing similar solid-state technology to the transmitter driving the Cobra Judy S-band phased array radar. Installation of the sixteen-TWT S-band transmitter upgrade is scheduled for early 2006.
DTI is also developing a new transmitter for the Haystack ultra-wideband imaging radar (HUSIR) in Westford, Massachusetts. This transmitter will drive four W-band (94 GHz) high power gyro-devices, and will be capable of future expansion to sixteen tubes. The design builds on both the upgraded Cobra Judy X-band transmitter, and DTI's development of a modulator for the Navy Research Laboratory's 94 GHz Warloc gyroklystron in 2002. This paper will discuss the key pulsed power technologies common to these radar transmitters, with emphasis on the system requirements for pulse stability and control.
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