DRFM jammers rely on receiving radar signals, digitizing them and retransmitting them with controlled delay, phase and frequency. As radar systems become more agile and use increasingly complex waveforms, test systems need to measure parameters such as pulse shape, timing, modulation and repeatability, as well as analyze complete pulse trains and pulse-to pulse variations. The R&S FSWX signal and spectrum analyzer addresses these requirements with its dual-channel, phase coherent architecture. With the R&S FSWX-KM700 pulse analysis option, Rohde & Schwarz adds a software extension dedicated to pulsed-signal and DRFM analysis, enabling engineers to evaluate pulse parameters, pulse trains, modulation and the timing behavior of jammer signals.
The R&S FSWX-KM700 pulse analysis option measures key pulse parameters, including pulse width, amplitude, rise time, fall time, pulse repetition interval, duty cycle, pulse shape and overshoot. These measurements can help engineers evaluate the accuracy and consistency of reproduced radar pulses and identify variations in timing, amplitude and other pulse characteristics. Such variations can affect the fidelity of a reproduced signal, making accurate pulse analysis important when testing DRFM-based deception and jamming systems.
The analysis also covers complete pulse trains. The option extracts pulse repetition frequency spectra and pulse-to-pulse variation data, allowing engineers to verify complex pulse sequence behavior and timing patterns. R&S FSWX-KM700 supports chirped pulses, pulse width modulation, pulse position modulation and phase-modulated waveforms. Engineers can use these measurements to check whether a device handles modulation schemes used by modern radar systems, including both the pulse envelope and modulation content.
The system can trigger on amplitude, pulse width, pulse repetition interval or user-defined patterns. This helps engineers isolate selected events inside a pulse train and focus the measurement on the relevant parts of the signal. For longer measurements, R&S FSWX-KM700 aggregates results from many captured pulses. This provides information about repeatability and consistency over time and helps engineers assess whether timing or modulation errors occur only under certain conditions.
The option comes with the following displays: parameter trend for DRFM electronic attack technique analysis, capture vs. time to measure jammer response time and latency between stimulus and response, individual pulse parameter display such as pulse amplitude, frequency, and phase to make sure there are no distortions introduced by the jammer. These measurements connect pulse analysis with the behavior of the jammer under test.
With the new R&S FSWX-KM700 option, the FSWX signal and spectrum analyzer gains a more specialized role in DRFM test workflows. It combines phase coherent multi-channel analysis with pulse, pulse train, modulation and segmented capture functions in one instrument, supporting verification of signal fidelity, timing behavior and consistency in agile electronic warfare scenarios.
