METHOD AND DEVICE FOR ESTIMATING INTERFERENCE POWER, AND PROGRAM

• Main Authors: IMAIZUMI YUTAKA, ITO KOTA, NAKAMURA HIROYUKI, GOTO KAZUTO, TSUBOI HIDEYUKI, KITA NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2020
• Subjects: AIRCRAFT; AVIATION; COSMONAUTICS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PERFORMING OPERATIONS; TRANSMISSION; TRANSPORTING; VEHICLES OR EQUIPMENT THEREFOR

To accurately estimate interference power between satellite and ground radio stations regardless of a satellite orbit.SOLUTION: A projection unit 12 in an interference power estimation device 1 projects the satellite orbit on a map representing a ground surface. A range acquisition unit 13 identifies a plurality of ranges on the map in a manner that the projected orbit is included. An altitude calculation unit 14 calculates the altitude of the satellite orbit in each of the plurality of ranges. For each of the plurality of ranges, a range-by-range interference calculation unit 16 calculates interference power between the satellite at the position identified by the latitude and the longitude of the range and the altitude calculated for the range, and a radio station installed on the ground surface. An estimated result calculation unit 17 selects, as an estimated result, a maximum value among the interference power calculated for each of the plurality of ranges.SELECTED DRAWING: Figure 5 【課題】衛星軌道によらず衛星と地上の無線局間の干渉電力を精度よく推定する。【解決手段】干渉電力推定装置１の投影部１２は、衛星の軌道を、地表面を表す地図上に投影する。範囲取得部１３は、投影された軌道が含まれるよう地図上の複数の範囲を定める。高度算出部１４は、複数の範囲それぞれにおける衛星の軌道の高度を算出する。範囲別干渉算出部１６は、複数の範囲別に、当該範囲の緯度及び経度と当該範囲について算出された高度とにより定められる位置の衛星と、地表面に設置された無線局との間の干渉電力を算出する。推定結果算出部１７は、複数の範囲それぞれについて算出された干渉電力のうち最大値を推定結果として選択する。【選択図】図５