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Article summary:
1. Passive radar has advantages such as low cost, good concealment, anti-stealth capability, and good low-altitude coverage.
2. Digital radio/television and digital communication technology provide a wide range of radiation sources for passive radar detection.
3. The feasibility of passive radar detection using different signals has been confirmed in research.
Article analysis:
The article is generally reliable and trustworthy, providing an overview of the advantages of passive radar and its potential applications with the help of digital radio/television and digital communication technology. The article cites research to back up its claims about the feasibility of passive radar detection using different signals, which adds to its credibility. However, there are some points that could be further explored in order to make the article more comprehensive. For example, the article does not discuss any potential risks associated with using passive radar or any counterarguments that may exist against it. Additionally, the article does not present both sides equally; instead it focuses solely on the benefits of using passive radar without exploring any potential drawbacks or limitations. Furthermore, there is no mention of any promotional content or partiality in the article which could be seen as a potential bias. All in all, while this article is generally reliable and trustworthy, further exploration into potential risks and counterarguments would make it more comprehensive and balanced.