ISL’s RFView HWIL (HardWare In the Loop) allows for real-world flight system testing without leaving the laboratory and offers simulations for any location around the globe.
RFView® HWIL using a Digital RF Memory (DRFM) approach. There are many limitations to this traditional approach that are overcome with ISL’s unique patented approach of convolving the channel model and stationary or moving targets with the radar signal. To accomplish HWIL simulation of terrain complexity shown in the SAR image above would require thousands of point targets with traditional RTG systems.
Features and Benefits
Signals are sampled with ADCs with state of the art currently being 12-16 bits of ADC resolution at 3-8 GS/s depending on the converter product. FPGAs then take the input samples and at each FPGA clock cycle a convolution of radar signal and channel model is performed, also with adjustments for RCS and frequency shift. The FPGA then sends signals to the DAC and upconverter for appropriate placement in the RF spectrum.
Several ISL RFView-HWIL solutions have leveraged COTS conversion and baseband FPGA processing from NI, Xilinx or others. Shown to the left is the NI PXI platform containing RF and FPGA modules. NI has a wide range of these modules on which ISL’s RFView® HWIL can perform. For specific RF frequency bands, Frequency ranges span from 2 to 21 GHz covering S, C, X, Ku and into K radar bands. Higher frequency ranges may be available upon request
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