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Keysight Technologies
Simulation and Veriication
of Pulse Doppler Radar Systems




                         Application Note
Introduction

    Modern radar systems that operate in environments with
    strong clutter, noise and jamming require advanced digital
    signal processing techniques. Direct analysis techniques
    often fail when designing such complex systems. Although
    simulation is often used, most simulation tools do not have
    enough models and integration capability to handle modern
    radar systems.

    This application note proposes a solution to this dilemma, a system-design methodology that uses
    SystemVue. Examples will be used to illustrate how advanced Pulse Doppler (PD) surveillance
    radar with moving target detection (MTD) and a constant false alarm rate (CFAR) processor can
    be designed by using a platform in the SystemVue tool. To ensure the design works properly, the
    platform can be connected to instrumentation for system test and veriication. This allows users to
    reduce their system development time and cost, while also decreasing their chances of unexpected
    system failures late in the system development process.




    1.0 System Design Challenges
    Advanced radar systems are very complex, necessitating sophisticated signal processing algo-
    rithms. Effective algorithm creation requires both a platform for simulation and for veriication.
    Models for signal generation, transmission, antennas, T/R switching, clutter, noise, jamming,
    receiving, signal processing, and measurements are also needed to create advanced algorithms.
    Most simulation tools do not have enough models and the integration capability needed to
    design such complex algorithms. SystemVue provides an effective and eficient environment for
    algorithm creation.
03 | Keysight | Simulation and Veriication of Pulse Doppler Radar Systems - Application Note



2.0 Signal Processing Algorithm Creation
The system-design methodology proposed below uses SystemVue. It concentrates on                *SystemVue has a built-in
algorithm design for PD radar systems. The development of MTD and CFAR processors              m-code compatible processor,
in a time-eficient manner are used as examples to better understand this methodology.          called MathLang, which is available
                                                                                               for use throughout the program.
To begin, consider the tasks undertaken by the radar DSP algorithm designer, which             Existing m-code iles can also be
typically breaks down into the following two stages:                                           directly incorporated into a design.
                                                                                               In addition, it has the capability of
                                                                                               co-simulating with MATLAB, from
Stage 1. Design the algorithm in software and verify it using a                                The MathWorks of Natick, MA.
simulation tool.
To accomplish this task, the designer needs:
  

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