Tomographic Mathematical Ideas Applied to Radar Detection
Abstract
By integrating the echoed pulses after detection, a Chirp diversity radar incorporating tomographic methods possesses non of the symptoms associated with conventional pulse Doppler techniques. The point spreading is a thumbtack- like function. Thus, range-Doppler coverage is unlimited since there are no ambiguity pop-ups to restrict this coverage. In addition, it appears that the mainlobe width depends exclusively on bandwidth. In contrast, the classic thumbtack ambiguity function is affected both by bandwidth and, inversely, by the integration time. More important than the preceding discovery is the property that ambiguity function is not constrained by radar uncertainty principles. Hence, the sands of the beach is not a suitable analogy to describe this ambiguity function. It is concluded that this superthumbtack characteristic offers superior resolution for an accurate interpretation of radar backscatter with respect to detection, parameter estimates, and imaging.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1992
- Accession Number
- ADA253849
Entities
People
- Marvin Bernfeld
Organizations
- RTX