Any chance its only a confidence boosting metric? Or is USAF SEAD really made ineffective?
Not really China has been developing novel approach in radar design for years now There is this quantum radar an Photonic radar
Plus they have OVH radar for years and recently completed the 3rd installation to cover the approach from Japan sea Now the coast and southwest are all covered
The quantum radar with single photon detection, reach 130 km. At least four Chinese institutions, including the 14th CETC, have contributed to its development.
Stealth Killer? Russia's Sixth-Generation Fighter Might Have a "Radio-Photonic Radar"
Potentially, such a radar system could allow the Russians to develop a weapons quality track on a stealth aircraft if it proves to be successful.
by
Russia’s
well as its
unmanned aircraft could be equipped with what is described as a “radio-photonic radar.”
If the Russians succeed in developing such systems, Moscow would be in possession of a sensor with far greater range and resolution—high enough to develop a three dimensional image of an airborne target—than anything currently in operation around the world. Potentially, such a radar system could allow the Russians to develop a weapons quality track on a stealth aircraft if it proves to be successful.
Other researchers—including one from China—have followed up on the PHODIR team’s work to address some of the limitations of current photonic radar technology.
“The signal processing in the sampling receiver is still a main limitation of the operation frequency and bandwidth,”
.
“To down-convert the high-frequency RF signals, microwave photonic frequency conversion and time-stretched analog-to-digital conversion techniques have been proposed, but it is still hard for a traditional radar receiver to process the down-converted baseband or intermediate frequency (IF)-band signals if a very large operation bandwidth is adopted.”
The Chinese researchers posed a solution to that problem in their paper.
“We propose and demonstrate a photonics-based real-time high-range-resolution radar incorporating optical generation and processing of broadband LFM signals,” the researchers wrote.
“In the transmitter, a broadband LFM signal is generated by frequency quadrupling of a low-speed electrical signal applying a single integrated electro-optical modulator. In the receiver, the reflected LFM signal is de-chirped to a low-frequency signal based on photonic frequency mixing. The implementation of photonic de-chirping can directly process high-frequency and large bandwidth signals without any electrical frequency conversion. After photonic de-chirping, ADC with a moderate sampling rate can be used in the receiver and real-time signal processing is realizable. In the proposed system, the bandwidth limitations due to electrical signal generation and processing is eliminated. The maximum operation bandwidth is mainly determined by the electro-optical devices, which can be tens or even hundreds of gigahertz. As a result, real-time radar detection with a very high range resolution can be realized.”
