Stretch and chirp waveform format for reduced generating and receiving hardware complexity
US5130714A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | May 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/282
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Unique stretch and chirp waveform formats are described which allow significant simplification of radar signal generation and receive processing hardware. The new formats produce a non-zero intermediate frequency (IF) to facilitate in-phase and quadrature (I/Q) processing but allows the use of a homodyne type of receiver architecture. That architecture greatly simplifies the receiver hardware because the first local oscillator (LO) signal is simply a sample of the transmitter drive signal and no second LO is required. The non-zero IF is achieved by control of the timing and start frequency of the first LO waveform for stretch processing and timing of the transmit signal gating for chirp processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.