OJ-194/UYA-4

OJ-197/UYA-4

The AN/UYA-4 is a series of system consoles developed by Hughes Aircraft Company for the United States Navy. ^[1]

Description

The Naval Tactical Data System (NTDS) was originally developed to organize anti-aircraft warfare, but in the mid- 1960s, it began to be considered for use in anti-submarine warfare (ASW) as well, and the ASWSC&CS (ASW Ship Command and Control System) project was initiated. ^[2] As part of this project, a console with greater versatility than the SYA-4 used by the early NTDS was required. ^[2] The UYA-4 was developed in response and was designed around 1965. ^{[1] [2]}

The UYA-4 series was the first NTDS display subsystem to employ electronic circuits as integrated circuits instead of individual components such as transistors, resistors, and diodes. ^[2] The basic model is the OJ-194/UYA-4, which has a 12-inch plan position indicator, six buttons with fixed functions, and 18 variable-action buttons (VABs), allowing switching between 45 operational modes. ^[1]

This series also included table type consoles (operations summary console, OSC) with a large 20-inch PPI scope arranged horizontally so that the screen could be viewed from three sides: ^[2] initially the OA-7981 and later the OJ-195 and 197 were used. ^[1]

In addition, the OA-7980 was also included to process information about the altitude of targets by obtaining information from 3D radar and other sources. ^[1]

However, the functions of this series were basically limited to operation and display, and information processing was performed by mainframe computers such as the CP-642 and AN/UYK-7. The OJ-197/UYA-4 in particular was expensive to maintain and manage, and was gradually replaced in succeeding systems by the AN/UYQ-70, capable of processing information on its own. ^[1]

References

Books

• Boslaugh, David L. (2003). When Computers Went to Sea: The Digitization of the United States Navy. Wiley-IEEE Computer Society Press. ISBN  978-0471472209.
• Friedman, Norman (1997). The Naval Institute Guide to World Naval Weapon Systems 1997-1998. Naval Institute Press. ISBN  978-1557502681.