More is also to be spent on protecting satellite communications through encryption and frequency hopping.

美将会投入更多精力于加密和频率跳变等技术，以保护卫星通讯。

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Each data packet is transmitted on a different frequency channel, following a pseudo-random hopping sequence determined by the device address of the master device.

在一个由主设备的设备地址决定的伪随机跳频序列的指引下，每一个数据包都经由不同的频率信道来传输。

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FHS 1 slot Frequency Hopping Sequence.

FHS 1时隙跳频序列。

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Both sending and receiving stations would, however, need some mechanism to encode and control the frequency-hopping pattern.

ECONOMIST: Player-piano pioneer

U.S. Patent No. 2, 292, 387 for a "Secret Communication System" was issued to Hedy Kiesler Markey and George Antheil in 1942. (Markey was the surname of a husband she had divorced in 1940.) The frequency-hopping technology was not put to use in World War II, but it was employed in 1962 during the blockade of Cuba.

WSJ: Book Review: Hedy's Folly

Lamarr termed the technique "frequency hopping, " a forerunner of the spread-spectrum technology that is used today in communications applications such as Wi-Fi.

WSJ: Book Review: Hedy's Folly