SU888042A1 - Device for processing laser anemometer doppler signal - Google Patents
Device for processing laser anemometer doppler signal Download PDFInfo
- Publication number
- SU888042A1 SU888042A1 SU802908522A SU2908522A SU888042A1 SU 888042 A1 SU888042 A1 SU 888042A1 SU 802908522 A SU802908522 A SU 802908522A SU 2908522 A SU2908522 A SU 2908522A SU 888042 A1 SU888042 A1 SU 888042A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- doppler signal
- processing laser
- laser anemometer
- processing
- anemometer
- Prior art date
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Description
II
Изобретение относитс к измерительной технике .и может быть использовано дл изк1ерени скорости потоков жидкости и газа допплеровским способом.The invention relates to a measuring technique. And can be used to determine the velocity of the flow of liquid and gas in a Doppler method.
Известны устройства дл обработки допплеровского сигнала лазерного анемометра, содержащие фотоприемник, установленный на выходе лазерного анемометра, и спектроанализатор, подключенный к фотоприемнику через усилитель f 1 УИ .There are known devices for processing a Doppler signal of a laser anemometer, comprising a photodetector mounted at the output of the laser anemometer and a spectrum analyzer connected to the photoreceiver via an amplifier f 1 UI.
Недостатками известных устройств вл етс необходимость ручной обработки результатов измерений; больша трудоемкость процесса получени значений скорости потока и, как следствие , значительное врем , затрачиваемое на обработку результатов измерений; сравнительно низка точность , результатов (при ограниченных длительности измерений и их количестве), что обусловлено наличием принципиально неустранимых амплитудных флюктуаций оптического сигнала, вызванных причинами, не .св занными с изменени ми скорости потока.The disadvantages of the known devices are the need for manual processing of measurement results; the large laboriousness of the process of obtaining the values of the flow rate and, as a consequence, the considerable time spent on processing the measurement results; the accuracy of the results is relatively low (with limited duration of measurements and their number), which is due to the presence of fundamentally unavoidable amplitude fluctuations of the optical signal caused by reasons not related to changes in the flow velocity.
. Целью изобретени вл етс повышение точности обработки допплеровс ,кого сигнала за счет автоматизации процесса обработки, определ ющего допплеровскую частоту как отношение половины полученного количества периодов сигнала гетеродина к длительности одного из указанных интервалов времени с поправкой на значение промежуточной частоты гетеродинного преобразовани .. The aim of the invention is to improve the accuracy of processing the Doppler signal by automating the processing process, which determines the Doppler frequency as the ratio of half the received number of periods of the heterodyne signal to the duration of one of the specified time intervals corrected for the value of the intermediate frequency of the heterodyne transformation.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802908522A SU888042A1 (en) | 1980-04-10 | 1980-04-10 | Device for processing laser anemometer doppler signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802908522A SU888042A1 (en) | 1980-04-10 | 1980-04-10 | Device for processing laser anemometer doppler signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU888042A1 true SU888042A1 (en) | 1981-12-07 |
Family
ID=20889076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802908522A SU888042A1 (en) | 1980-04-10 | 1980-04-10 | Device for processing laser anemometer doppler signal |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU888042A1 (en) |
-
1980
- 1980-04-10 SU SU802908522A patent/SU888042A1/en active
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