Certification to the Latest ISO Standard Reinforces Applied Signal Technology’s Commitment to Customers and Quality Assurance

SUNNYVALE, California, March 12, 2010 – Applied Signal Technology, Inc. (AST) (NASDAQ: APSG), a market leader in advanced intelligence, surveillance, and reconnaissance (ISR) solutions, is proud to announce that its quality management system has been certified to ISO 9001:2008 standards through UL DQS Inc. Management Systems Solutions. This achievement is an important milestone, extending the company’s transformation as a provider of superior quality ISR products, systems, and services. The audit addressed all areas of AST operations – from engineering, product design and manufacturing, to delivery and customer service.

William B. Van Vleet, AST’s Chief Executive Officer, commented, “Applied Signal Technology demonstrated its commitment to continuous improvement through the process of becoming ISO 9001:2008 certified. Effective quality management is essential. Our customers need to be confident that they are doing business with an organization that can meet or exceed their requirements in a timely and cost-efficient manner. Our employees have put forth a tremendous effort in becoming ISO 9001 certified and are dedicated to providing high quality ISR products, systems, and services. We are proud of the exceptional teamwork displayed by our employees to make this certification happen and look forward to continuing to improve customer service and streamline our operations.”

About DQS-UL Group
The DQS-UL Group is one of the leading certification bodies for management systems worldwide. The group has built a global presence with more than 60 offices in 40 countries, and employs more than 2,400 people, including 2,000 auditors. With over 20,000 customers in 100 countries, the group serves a wide spectrum of industry sectors, including automotive, electrical engineering, engine construction, the metal and chemicals industries, services, food, health care, the aviation and aerospace industries and telecommunications. DQS and UL certificates have been issued for more than 45,000 customer sites worldwide.

About ISO
The International Organization for Standardization, www.iso.org, based in Geneva, Switzerland, is the source of the ISO 9000 and ISO 14000 families of quality and environmental management standards, respectively, and some 15,000 International Standards for business, government, and society. ISO is a network of national standards institutes from 146 countries working in partnership with international organizations, governments, industry, business and consumer representatives.

ISO 9001:2008 is an internationally recognized quality management standard. The standard focuses on defining customer quality requirements, use of data to analyze the processes, meeting applicable customer and regulatory requirements, enhancing customer satisfaction and continually improving business performance.

About Applied Signal Technology, Inc.
Applied Signal Technology, Inc. is a leading provider of advanced intelligence, surveillance and reconnaissance (ISR) products, systems, and services that enhance global security. For further information about Applied Signal Technology, visit our website at www.appsig.com.