| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna for transmitting data to a camera without shielding a reference member in a photogrammetry system. SOLUTION: In this photogrammetry target, an antenna housing part 21 is disposed on an upper surface of a control part casing so that the ratio of distance from a plane SP to an upper end surface of the antenna housing part 21 along a perpendicular direction to the plane SP in relation, to the distance from the reference member 44 to the antenna housing part 21 along the plane SP becomes smaller than tan 8 deg.. A loop antenna housed in the antenna housing part 21 is connected to an oscillator 221 of frequency of 310 MHz. Total length of the loop antenna is about 0.48 m and it's internal diameter is about 25 mm. The antenna is set to be about 9.5 mm above the upper surface of the control part.
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