Delay Doppler Resolution Performance of Large Time Bandwidth Product Linear FM Signals in a Multipath Ocean Environment
Abstract
The primary function of active sonar systems in ASW is to detect and localize submarines. In localization the key target parameters to be determined are range and range rate, which are derived from the measured travel time of the transmitted pulse and its Doppler shift respectively. The range determination requires short pulses equivalent to large frequency bands, whereas range rate determination requires long pulses. Both can be achieved simultaneously by applying so-called 'large time-bandwidth product' pulses. The most common one, also used in radar, is the chirp pulse which changes frequency linearly during the time of pulse transmission and is called a 'linear frequency modulated' or LFM pulse.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1989
- Accession Number
- AD1114331
Entities
People
- J. P. Hermand
- W. I. Roderick
Organizations
- SACLANT ASW Research Centre