SLASEC8B February 2017 – January 2019 PGA460-Q1
The nonlinear scaling block in the DSP data path provides exponential scaling (digital nonlinear amplification) for the echo signal to achieve a higher SNR. This feature is useful for detecting long distance object where the amplitude of the echo signal is very attenuated and close to the noise floor.
The nonlinear scaling block performs the following algorithm:
The SCALE_N, SCALE_K, and NOISE_LVL bits are EEPROM parameters in the DSP_SCALE register.
The nonlinear scaling block can be applied to Preset1 and Preset2.