A CW FM type sounding signal is used in the classical solution of silent sonar. While the signal provides a relatively simple implementation of digital signal processing, and ensures good detection conditions, unfortunately, in the presence of the Doppler effect, distance measurement results tend to be wrong. This is due to the fact that the received signal’s instantaneous frequency value is dependent both on the distance to the object, and its speed. Sounding signal, as patented by the authors, is a combination of Pseudo-Random Sequences (PRS), and elementary signals of Hyperbolic Frequency Modulation (HFM) type. The structure of this signal is aimed at minimizing measurement error. The article presents the idea of a sounding signal of HFM...
Abstract—The influence of transmitted waveforms on the signal-to-reverberation ratio (SRR) of a low-...
Hyperbolic Frequency Modulation (HFM) signal has certain tolerance to Doppler shift. However, during...
A high frequency experiment was conducted in the Woods Hole Harbor in Massachusetts to evaluate the ...
The secretiveness of sonar operation can be achieved by using continuous frequency-modulated soundin...
The channel in the marine environment is a time-varying and space-varying channel. Pulse-truncated c...
As a ranging sensor, a continuous transmission frequency modulation (CTFM) sonar with its ability fo...
The majority of active sonar systems detect and classify a target based on the amplitude of the rece...
Silent sonars are designed to reduce the distance over which their sounding pulses can be detected b...
Silent sonars are designed to reduce the distance over which their sounding pulses can be detected b...
For pulse compression characteristics and not easily affected by noise, linear frequency modulation ...
The article presents methods that help in the elimination of mutual clutter as well as the consequen...
To increase sonar range and to improve the range resolution and SNR, modern sonars use a matched fil...
This paper deals with a novel method of transmission and receipt of a signal based on both the prope...
The application of Frequency Modulated (FM) signals promises the following essential improvement of ...
Stealth in military sonars applications may be ensured through the use of low power signals making t...
Abstract—The influence of transmitted waveforms on the signal-to-reverberation ratio (SRR) of a low-...
Hyperbolic Frequency Modulation (HFM) signal has certain tolerance to Doppler shift. However, during...
A high frequency experiment was conducted in the Woods Hole Harbor in Massachusetts to evaluate the ...
The secretiveness of sonar operation can be achieved by using continuous frequency-modulated soundin...
The channel in the marine environment is a time-varying and space-varying channel. Pulse-truncated c...
As a ranging sensor, a continuous transmission frequency modulation (CTFM) sonar with its ability fo...
The majority of active sonar systems detect and classify a target based on the amplitude of the rece...
Silent sonars are designed to reduce the distance over which their sounding pulses can be detected b...
Silent sonars are designed to reduce the distance over which their sounding pulses can be detected b...
For pulse compression characteristics and not easily affected by noise, linear frequency modulation ...
The article presents methods that help in the elimination of mutual clutter as well as the consequen...
To increase sonar range and to improve the range resolution and SNR, modern sonars use a matched fil...
This paper deals with a novel method of transmission and receipt of a signal based on both the prope...
The application of Frequency Modulated (FM) signals promises the following essential improvement of ...
Stealth in military sonars applications may be ensured through the use of low power signals making t...
Abstract—The influence of transmitted waveforms on the signal-to-reverberation ratio (SRR) of a low-...
Hyperbolic Frequency Modulation (HFM) signal has certain tolerance to Doppler shift. However, during...
A high frequency experiment was conducted in the Woods Hole Harbor in Massachusetts to evaluate the ...