Patents
US 8411530 B2: Multi-frequency, multi-beam acoustic doppler system
- Granted
- 2013-04-02
- Filed
- 2009-12-16 application 12639989
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An acoustic Doppler system including an acoustic subsystem controller operatively connected to a plurality of acoustic transceivers, with a first of the plurality of acoustic transceivers, operating at a first acoustic frequency, operatively connected to a first group of at least one transducer, and a second of the plurality of acoustic transceivers, operating at a second acoustic frequency, operatively connected to a second group of at least one transducer, where the acoustic subsystem controller includes a digital circuit configured to sample analog signals received from the first and second groups of transducer in pairs having a pair-wise sampling frequency that is four times the operating frequency of associated acoustic transceiver. Also presented is a method of sampling acoustic Doppler signals received from such devices, with samples comprising a pair of values taken with a pair-wise sampling frequency that is four times the operating frequency of associated acoustic transceivers, and the resulting pairs of values being further processed as representative values of the cosine and sine components of a Doppler-shift signal.
Source: PVGPATDIS, file of 2026-04-10 (ipg130402.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| YSI, INC. 24 patents | US company or organization | Yellow Springs, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Daryl B. Slocum | Lemon Grove, CA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Ramon Cabrera | Miami, FL | 5 | PVGPATDIS, file of 2026-04-10 | |
| Zhivko Grozev | San Diego, CA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Alexander Kovachev | San Diego, CA | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01S | Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other waves | G01S15/60 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2010-03-08 | Assignment Assignment of assignor's interest | CABRERA, RAMON signed 2009-12-19 GROZEV, ZHIVKO signed 2009-12-19 KOVACHEV, ALEXANDER signed 2009-12-19 SLOCUM, DARYL B. signed 2009-12-19 | YSI INCORPORATED YELLOW SPRINGS, OH | 24042/288 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.