Radar Range Equation SNR Calculator

Radar Systems: Calculate received echo power ($P_r$), Signal-to-Noise Ratio (SNR), thermal noise floor, and maximum detection range ($R_{max}$).

Peak Transmit Power $P_t$ (kW):

Carrier Frequency $f$ (GHz):

Antenna Gain $G$ (dBi):

Target RCS $\sigma$ ($ ext{m}^2$):

Target Range $R$ (km):

Receiver Bandwidth $B$ (MHz):

Noise Figure $F_n$ (dB):

Total System Losses $L_{sys}$ (dB):

Required Min SNR for Detection (dB):

Received SNR

-- dB

Max Range $R_{max}$

-- km

Echo Power $P_r$

-- dBm

Noise Floor $N$

-- dBm

• Radar Wavelength ($\lambda = c/f$): -- cm

• Target RCS in Decibels: -- dBsm

• Two-Way Free-Space Path Loss ($FSPL^2$): -- dB

• Detection Margin at Specified Range: -- dB

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