The radar library includes popular radar signal sources such as chirp-linear FM signals, chirp-FM signals with externally-defined ramp, and FMCW. These signal generations are parameterized to support user-defined pulse-frequency span, pulse-repetition frequency (PRF), duty cycle, and more. The output waveform is a complex or complex envelope signal that spans the signal frequency from a start to a stop value using a linear ramp. The center frequency of the generated signal can be defined manually or calculated automatically as the center of the signal band.
RF, Antenna, and Propagation Models
The comprehensive library addresses end-to-end radar systems with common radar RF links, an RF-clutter model, jammer and interference models, and antenna models, as well as channel-propagation models, including multi-path fading, Doppler shift, Rummler channel, clutter channel, white Gaussian noise, and Weibull noise.
The radar library supports dynamic modeling of targets based on range and Doppler offset patterns to emulate the radar target. The software also supports RCS models with Swerling fluctuations.
Signal (Baseband) Processing
The library includes specialized signal processing blocks to support baseband analysis, including MTI, MTD, and CFAR. In addition, VSS system design software can combine the front-end circuits with NI LabVIEW-based signal processing building blocks, capturing the effects of circuit changes to the overall system performance. The LabVIEW block provides access to an extensive LabVIEW signal-processing library, as well as to RF instruments and FPGAs, supporting IP sharing, hardware in the loop, cross verification, and virtual prototyping.
The accompanying phased-array generator wizard and test bench enables engineers to rapidly configure phased-array antenna systems and gain further insight into overall array performance. The user interface to each block in the test bench enables users to readily construct different array configurations and analyze array-gain patterns. System designers can thus simulate element failures, variations in gain and phase, and imperfections in placement of patches.