| 摘要 |
PURPOSE:To improve the accuracy of position data representing the measured point of an electric field strength. CONSTITUTION:Electric field strength measurement devices 5-1, 5-2, 5-3 receive a measurement object channel through a reception antenna 3 and a distributer 4 to measure its electric field strength and to provide the output of electric field strength data D11, D12, D13. An electric field strength data output section 6 select sequentially the electric field strength data D11, D12, D13 for a prescribed period and sends the selected data as electric field strength data D1. A satellite navigation measurement device 1 uses an antenna 2 to receive a GPS radio wave from plural satellites to calculate the latitude and the longitude and provides the result as an output of position data Pi. A data recording and reproduction device 8 records/reprodurces the position data P1 and the electric field strength data D1 integrated by a recording data generating section 7. A display data generating section 14 generates an electric field strength map based on the reproduced position data P2, electric field strength data D2 and map information M1 for a measured area. |
