Similar(60)
These detection systems, called sonar, may intercept propeller or other noise generated by the submarine or may send out sounds and receive echoes from the submarine hull.
Therefore, there have been only a handful of laser ranging stations in the world that can receive echoes from these lunar targets.
The ionosondes continuously transmit radio waves from 2 to 30 MHz and receive echoes from the ionosphere to provide the bottomside plasma density profile every 15 minutes.
While in the magnetospheric cavity, RPI will receive echoes from the magnetopause and the plasmasphere and will measure the direct response of the magnetosphere's configuration to changes in the solar wind.
The SEALION ionosonde is operated to continuously transmit radio waves from 2 to 30 MHz and receive echoes from the ionosphere in order to provide a bottom-side plasma density profile every 15 min (Kenpankho et al. 2011).
It should be mentioned that the SuperDARN radar needs ionospheric irregularities to receive echoes, which are considered to be generated mainly by gradient-drift instability (e.g., Keskinen and Ossakow 1983), growing in intensity if the electric field and plasma density are strong enough and properly oriented.
The returning echo is also Doppler shifted by approximately another 0.8 kHz, so the bats here receive echoes from objects straight ahead with frequencies ranging from approximately 84.5 to 85.3 kHz.
In Figure2, the received echo is noiseless.
Fig. 5 HRRP of the received echo, where τ d n = 5.45 μs. a Once repeater.
The high oversampling rate is used due to discrete-time demodulation of the received echo signals.
In addition, the received echo after stretch processing near these time points could be regarded as the mixed target echo.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com