A laser radar apparatus comprising: - a scanner configured to perform beam scanning at a first angular speed or a second angular speed lower than the first angular speed, and configured to emit modulated light originating from a light source as transmitted light, and to receive reflected light as reception light; - a wind meter configured to obtain wind measurement data including an intensity of a reception signal for each distance in each wind measurement direction, on a basis of the reception light obtained when the scanner performs the beam scanning; - an optical axis angular correction amount deriver (40; 70) configured to derive an optical axis angular correction amount; and - an optical axis corrector configured to correct an optical axis angular deviation between the transmitted light and the reception light, using an optical axis angular correction amount derived by the optical axis angular correction amount deriver (40; 70), characterized in that : - the laser radar apparatus further comprises a measurable wind distance calculator monitor configured to calculate a measurable wind distance being a distance at which wind speed is measurable, based on wind measurement data obtained by the wind meter through the beam scanning at the first angular speed, and to monitor the calculated measurable wind distance to detect decrease of the calculated measurable wind distance; and - the optical axis angular correction amount deriver is configured to derive an optical axis angular correction amount thereby to obtain the largest distance of the measurable wind distance, on a basis of the first angular speed and wind measurement data obtained by the wind meter through the beam scanning at the second angular speed, when the decrease of the calculated measurable wind distance is detected by the measurable wind distance calculator monitor . - a scanner configured to perform beam scanning at a first angular speed or a second angular speed lower than the first angular speed, and configured to emit modulated light originating from a light source as transmitted light, and to receive reflected light as reception light; - a wind meter configured to obtain wind measurement data including an intensity of a reception signal for each distance in each wind measurement direction, on a basis of the reception light obtained when the scanner performs the beam scanning; - an optical axis angular correction amount deriver (40; 70) configured to derive an optical axis angular correction amount; and - an optical axis corrector configured to correct an optical axis angular deviation between the transmitted light and the reception light, using an optical axis angular correction amount derived by the optical axis angular correction amount deriver (40; 70), - the laser radar apparatus further comprises a measurable wind distance calculator monitor configured to calculate a measurable wind distance being a distance at which wind speed is measurable, based on wind measurement data obtained by the wind meter through the beam scanning at the first angular speed, and to monitor the calculated measurable wind distance to detect decrease of the calculated measurable wind distance; and - the optical axis angular correction amount deriver is configured to derive an optical axis angular correction amount thereby to obtain the largest distance of the measurable wind distance, on a basis of the first angular speed and wind measurement data obtained by the wind meter through the beam scanning at the second angular speed, when the decrease of the calculated measurable wind distance is detected by the measurable wind distance calculator monitor . <EOS>