Lesson plan
COHO
COHO, short for Coherent Oscillator, is a technique used with radar systems based on the cavity magnetron to allow them to implement a moving target indicator display. Because the signals are only coherent when received, not transmitted, the concept is also sometimes known as coherent on receive. Due to the way the signal is processed, radars using this technique are known as pseudo-coherent radar. COHO can be inexpensively implemented in analog electronics and was widely used in the 1950s into the 1970s. As newer solid-state systems and fully digital processing became inexpensive, COHO became less widely used and is today found only on certain low-cost systems.
Article summary
COHO, short for Coherent Oscillator, is a technique used with radar systems based on the cavity magnetron to allow them to implement a moving target indicator display. Because the signals are only coherent when received, not transmitted, the concept is also sometimes known as coherent on receive. Due to the way the signal is processed, radars using this technique are known as pseudo-coherent radar. COHO can be inexpensively implemented in analog electronics and was widely used in the 1950s into the 1970s. As newer solid-state systems and fully digital processing became inexpensive, COHO became less widely used and is today found only on certain low-cost systems.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.