PARIS — The British Defence Ministry has added signals intelligence to the payload it wants on a future high-resolution radar intelligence, surveillance and reconnaissance system.

Given the political turmoil in Britain, whether the multi-satellite system will be contracted anytime soon is unknown. But the Defence Science and Technology Laboratory (DSTL), an arm of the Defence Ministry, has awarded Airbus Defence and Space a contract to design cluster of satellites to carry both a synthetic-aperture radar (SAR) and radio-frequency collection payload.

“This addition . . .

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