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A target simulator based on the digital RF memory (DRFM) is presented in this paper. The simulator consists of a interface unit which is controlled by MCU, a high-precision calculation DSP unit, a DRFM unit based on FPGA, and corresponding microwave unit. This target simulator has simple circuits, high precision and stability. The integrated testing results with a seeker proved that the system successfully...
The noise simulation circuit of noncoherent spread-spectrum system intermediate frequency (IF) signal simulator is designed based on FPGA and DSP. This circuit generates white Gaussian noise (WGN), calculates coefficients of signal-to-noise ratio (SNR) refer to the specified SNR of each channel and according to these coefficients to generate spread-spectrum IF signal for transmitting to simulate the...
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