K9 Patrol Honolulu Airport https://www.hawaii-aloha.com/blog/2013/04/08/k9-patrol-honolulu-airport/ （以下、上記ＵＲＬから抜粋引用） ------------------------------------- "These dogs are hard at work and trained to detect explosives or hazardous materials that may be hidden throughout the premises." -------------------------------------
Meet the canines working to keep you safe at the airport Posted: Sep 20, 2018 / 01:31 AM HST https://www.khon2.com/local-news/meet-the-canines-working-to-keep-you-safe-at-the-airport/ （以下、上記ＵＲＬから抜粋引用） ------------------------------------- "Explosive detection canines are a key element in security operations at Daniel K. Inouye International Airport." -------------------------------------
Police dog https://en.wikipedia.org/wiki/Police_dog （以下、上記ＵＲＬから抜粋引用） ------------------------------------- A police dog, known in some English-speaking countries as a "K-9" or "K9" (a homophone of "canine"), is a dog that is specifically trained to assist police and other law-enforcement personnel. -------------------------------------
Ohio Section Journal - The Technical Coordinator - February 2019 edition February 17, 2019 https://www.jeffreykopcak.com/2019/02/17/ohio-section-journal-the-technical-coordinator-february-2019-edition/ （以下、上記URLから抜粋引用） ------------------------------------ WWV update There was a lot of FUD (that’s fear, uncertainty, and doubt) around the future of WWV back in September of last year. You can check my article in the September edition of the OSJ or on my website. While not yet signed, the fiscal year budget for 2019 does include funding all WWV stations. As it turns out, this year is the 100th year of operation. A member of the Northern Colorado Amateur Radio Club has met with NIST management and is planning a special event station between September 28 - October 2. I’ll be anticipating that event and hope to work WWV. ------------------------------------
Journal List.>J Res Natl Inst Stand Technol>v.119; 2014>PMC4487279 WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487279/ (以下、上記URLから抜粋引用) ------------------------------------ It is interesting to note that during this era the LF and VLF signals from Fort Collins, phased locked to Boulder, were received in Hawaii and Maryland (then the home of WWV) and used to control the frequency of the shortwave stations WWVH and WWV [27]. ------------------------------------
LFは30-300kHzなので、WWVB(60kHz)がハワイで受信できていたことになります。 ただし、"It is interesting to note"ということは、当たり前の現象ではなかったのかもしれません。 上記資料で引用されている元の資料 [27]を見てみました。
PPP WizLite - BlackDot GNSS 14. May 2017 https://www.blackdotgnss.com/2017/05/14/ppp-wizlite/ （以下、上記URLから抜粋引用） ------------------------------------- "The figures show that, under good satellite visibility, a sub-meter accuracy could be obtained within 30 seconds in static mode with the SBAS ionospheric corrections. " -------------------------------------
以下、上記URLから抜粋引用 ----------------------------------------- What does the "U" flag mean for SBAS satellites?
For SBAS, the Android spec does not specify if the "U" ("Used") flag refers to pseudoranges from the satellite being used in the position solution or to correction information originating from that satellite being used. Here's the documentation for the boolean value for "used" that's passed from the chipset to the Android OS to GPSTest, which is shown as a "U" letter in the "Flags" column on the GPSTest Status screen: Reports whether the satellite at the specified index was used in the calculation of the most recent position fix. As a result, it's unclear how this is being implemented by OEMs. -----------------------------------------
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