Additionally, the company is now authorized by JPO to integrate the Selective Availability Anti-Spoofing Module (SAASM) GPS receiver into the Mark V.

"Now, with this important JPO security approval for the Mark V, we are seamlessly handling the SAASM GPS receivers with the latest Operational Software in our facility," commented John Hirsekorn, vice president of sales and marketing at Symmetricom's Timing, Test and Measurement Division.

"U.S. Department of Defense as well as other Government customers can now expeditiously obtain the most reliable and secure GPS-based timing solution from Symmetricom."

SAASM is the security architecture selected by the Chairman of the Joint Chiefs of Staff to provide the next generation security functions for GPS Precise Positioning Service (PPS) authorized military users.

The GPS JPO has the overall responsibility for controlling the development, production, sale and distribution of GPS security devices and PPS Host Application Equipment (HAE), such as the Mark V.

Symmetricom's Mark V offers secure, ultra-precise timing performance by using the GPS Precise Positioning Service (PPS) that takes full advantage of the accuracy and anti-spoofing capabilities of the P(Y) code.

The Mark V corrects for Selective Availability and uses the encrypted Y-code augmented with Receiver Autonomous Integrity Monitoring (RAIM) to protect against satellite/system anomalies and spoofing.

Incorporating the latest SAASM technology with Symmetricom's Mark V, U.S. Department of Defense and Government customers obtain the most reliable GPS-based timing possible with accuracy better than 10 nanoseconds RMS to UTC (USNO).

Symmetricom has been involved with the development of secure GPS PPS timing instruments since 1996.

The superior performance levels achieved by the Mark V are the result of a complete strategy based on accurate position determination, dual frequency GPS tracking, system integrity monitoring, multi-satellite ensembling techniques and a high-stability ovenized oscillator.

Standard timing outputs from the Mark V include a 1 PPS accurate to less than 10 nanoseconds rms to GPS/UTC, analog IRIG B time code, and serial I/O time strings. Using the keypad or RS-232 port, users have control over a variety of time formats, configurations, and output options, including GPS and oscillator status and controls.

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