The turbulence characteristics information gained from micro-thermometer measurement data analysis brings good reference to optimal design and operation for photoelectric system. The diurnal variation and scaling exponent of power spectrum analysis indicate that the measurement range and the sample rate of micro-thermometer are enough to response the turbulence measurement encountered in most laser transmission and astronomical observation fields. Monin–Obukhov length is positive at night and negative in day, and the scaling exponent is near -5/3 for temperature power spectrum, which is similar to wind power spectrum except for periods when wind from inland. There is obvious ‘Sombrero’ structure diurnal variation of turbulence near South China Sea, whose strength is mainly brought out by buoyancy heat bubble in day, and by wind shear at night. Compared to ultrasonic anemometer, there is a sensitive lower measurement limit of micro-thermometer whose effective refractive index structure coefficient of system noise is less than 10–18 m-2/3. The observation of turbulence strength of representative test point, for more than one month, is implemented at Yangmeikeng near the South China Sea. To avoid interference from human and buildings, the wireless control for the micro-thermometer is realized based on CC1100. Using the theory of Wheatstone bridge, the micro-thermometer is designed and self-developed. For visible and near infrared band, the refractive index structure coefficient mainly depends on temperature structure coefficient. The refractive index structure coefficient is an important parameter describing the turbulence strength. Optical turbulence causes degradation of beam quality and energy to laser transmission, and brings image deterioration to astronomical observation. The electromagnetic wave will change state through the atmosphere when encounters the inhomogeneities of refractive index caused by turbulence. I continuously lose internet service at random times during the day/night.Most of the application scenarios of techniques related to electromagnetic wave transmission of photoelectric system are located in the earth's atmosphere or through the atmospheric path. It seems tied to the cable modem/gateway rebooting - but I don't actually look for the lights on the modem to see if they have changed status or not. I know something has happened because the network status icon in the lower right corner changes to a yellow ! triangle sign. Netgear CG3000D-RG Constantly drops wireless connection, internet does not work. After a few minutes it will go away and I can use the internet again. I have to reset it when I wake up in the morning and then I reset it again when I get home from work. However I have noticed that there is this message that appears every single time I lose internet connection in the event log: The wireless signal will go off and on by itself and the LAN connected laptop loses its internet connection. ![]() Now the "Notice (6)" means that this is the sixth time since Sun Apr 21 00:00:01 that this TLV-11 has appeared. It also means that the modem has lost signal/rebooted six times. I don't know what the message means, but I do know there is a direct correlation between this messages appearance and me losing internet connection. Find the address bar in your router and type in your routers IP address. Here is my current signal levels - something no tech has checked at the modem/router side. The default Netgear CG3000 IP Address is: 192.168.0.1. ![]() Once you have entered the routers IP address into the address bar, simply press Enter. If the correct IP address was used you will see a login screen screen similar to this: Screenshot of Netgear CG3000.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |