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Case Study

Radar CDU Testing

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Low Level Light weight Radar (LLLR) for army air defense for detecting and tracking all kinds of aerial targets flying at ultra-low, low and medium altitudes was developed by a DRDO lab with a State-of-the-Art display unit called Commander Display unit (CDU)

CDU communicates with Radar Controller (RCN) to change system parameters and with Secondary Radar (IFF) through Radar controller. Target Designator Unit (TDU) software is part of CDU software, which communicates with 'n' number of Target Data Receivers (Tars)

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The Commander Display Unit (CDU) provides the presentation of radar generated synthetic information comprising of target tracks and plots, along with various other information such as…

1. Geographic Map

2. Clutter Map

3. Sector Blanking

4. Alarm zones

5. Range Markers

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Development was completed

Sixty thousand Lines of Code

Complex Graphic User Interface

Advanced Features

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To Draw an extensive Verification (Test) plan for System level Functional Tests and Graphic User interface tests

To conduct testing activities as per IEEE–12207 standards

To carry out an exhaustive Functional test and GUI test and report defects

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Developed Templates, checklists to suit IEEE-12207 Standards

Designed and developed System level test cases based on domain knowledge and Input documents (SRS, IDD): Requirement based testing

Designed GUI test cases based on checklists

Executed the tests

Demonstrated 100% Requirements Coverage in testing

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Entry Phase: ST; Exit Phase: ST

Duration: 5 months

Test team size: 4-5

Lines of Code : 60KLOC

Environment: Windows Embedded XP, C#, .NET Framework

Number of Functional Test cases: 300

No. of Functional Defects found: 50

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