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ロシアは4つの衛星を動かして、商用のウクライナに情報を提供するレーダー衛星との間のギャップを埋める一方で、5番目の衛星も同様の動きをしている—米国当局者はそれらの一部が対衛星兵器プログラムの一部であると考えている
editors@toms · 2026-05-24 · via Latest from Tom's Hardware

オープンソースの軌道追跡データによると、4つのロシアの人工衛星がアメリカ-フィンランドの人工衛星に接近するために相当な燃料を消費していることが明らかになりました。Integrity ISR(LinkedInを通じて)によると), アメリカに拠点を置く国防と情報機関企業、ロシアの資産がICEYE-36に迫った。ICEYEが運用するレーダー衛星で、アメリカとヨーロッパ政府——ウクライナを含む——に偵察データを提供しており、ウクライナはロシアの侵略に対する防衛のためにこのデータを使用している。

衛星は共平面操縦を実行し、ICEYEと同じ軌道平面上に配置しました。ここでの最大の懸念は、この操縦が交会接近操縦(RPO)の最初のステップであるということです。交会接近操縦とは、1つの宇宙船(この場合はセット)が他の宇宙船に近づくためにその飛行経路を変更する操作です。さらに懸念すべきなのは、この動きが多くの燃料を消費するということで、ISRは地球観測、信号情報収集、通信に対してこれが一般的ではないと述べています。第五の衛星も、他の4つの衛星と同じ燃料を消費する動きを報道されています。

彼らの意図は現在不明ですが、Ars Technicaは、一部の米国当局者がロシアの人工衛星の一部が対衛星兵器プログラムに関連していると信じていると報告しています。2022年、ロシア外務省は軍事作戦で商用衛星を使用することに対して警告し、非核拡散・軍縮部門の副部門長コンスタンチン・ヴォロンツォフは「準民間インフラは報復攻撃の正当な標的となり得る」と述べています。

それでも、ロシア軍は「剣を振るう」と呼ばれる行動、つまり直接の戦闘に参加することなく、その能力を示し威嚇することで知られています。冷戦時代以来、Tu-95「ベア」戦略爆撃機がしばしば連合国の空域を探知し、NATOの戦闘機によって迎撃され、護衛されることがありました。この活動は現在、宇宙空間にも拡大しているようです。ロシアは以前、複数の国家偵察局(NRO)のKey Hole光学偵察衛星が使用する同様の共平面軌道に軍事衛星を打ち上げていました。また、ロシアの信号偵察衛星がヨーロッパの衛星を妨害し「リスクの高い接近」を行う。

それにもかかわらず、ロシアが何をするかについての懸念がまだある。特に最近、地球同期衛星を打ち上げ、それは対衛星システムの一部であると疑われるためだ。米国空軍宇宙軍は、宇宙船を検査するなどして対応したが、これは対立のリスクを伴わない限り、それはほぼ唯一できることだ。結局のところ、1967年の宇宙空間条約は、宇宙空間はすべての国による探査と利用のために自由であると規定しており、両方が衛星を互いに近くに送ることができることを意味し、「有害な干渉」を引き起こさない限りである。

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