The utility model aims to reduce by half the cost of manufacture of the radar, the improvement of its setting, adjustment and substantial increase in the reliability of the radar design. Locator for detecting gas leakage from objects on the ground comprises two continuous laser with a close working emission wavelengths, a modulator at the output of a laser, generating infrared line strongly absorbed by natural gas, mirrors, directing two infrared and one red rays to the object, the telescope optically conjugate with the object, the radiation receiver disposed in the focus of the telescope, and an electronic unit, characterized in that the second continuous laser, called modified simultaneously generates red and infrared lines, wherein the infrared line weakly absorbed by natural gas, this radiation is controlled by an intracavity modulator in antiphase.
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