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4 results for “radar”

Formulae (4)

R_{max} = \dfrac{c}{2\,PRF}

Farthest range at which a pulse echo returns before the next pulse is sent; beyond it, targets appear at false (aliased) ranges.

\Delta R = \dfrac{c\tau}{2}

Smallest separation at which two targets appear as distinct echoes, set by the transmitted pulse width.

f_d = \dfrac{2v_r}{\lambda}

Frequency shift of an echo from a moving target; the factor of two accounts for the round trip to the target and back.

P_r = \dfrac{P_t G^2 \lambda^2 \sigma}{(4\pi)^3 R^4}

Received echo power for a monostatic radar, combining transmit power, antenna gain, target size and range.