Rose, Designer and Engineer

GNSS Analysis interactive plots The GNSS Analysis app provides interactive plots organized in radio frequency (RF), clocks, and measurements columns, as shown in figure. 1)The RF column shows the following data: For each constellation, the four satellites with the strongest signals. For each satellite, the time plot of carrier to noise density (C/No). The skyplot […]

*I would like to talk about smart mobility here with the electric kickboard like Segway. *Since mobility has a wide range of characteristics, we intend to conduct limited research on shared mobility. Background of Smart Mobility 1) Stricter enforcement of environmental regulations 2) An increase in Mega City 3) An increase in one or two […]

Smart Mobility of Smart City Smart mobility is one element that implements Smart City, and more than 50% of Smart City projects focus on innovating urban traffic and mobility. Reference : http://dbworld.tistory.com/attachment/cfile5.uf@247DA04855B99F4F1FDFE7.pdf In order to solve problems such as population increase, concentration of cities, environmental pollution and traffic congestion, traffic service and personal transportation means […]

Smart Mobility Smart Mobility is about offering more sophisticated and more choice in intermodal mobility, by working in association with mobility players, to sharpen the competitive edge against private car use. Smart Mobility is also about improving modal shift and setting the stage for a win-win strategy involving mobility players and users. Referece : https://uic.org/IMG/pdf/smart_stations_in_smart_cities.pdf […]

1) SNS Data Social network analysis : “Smart cities” Reference : https://chorally.com/learn-impact-smartcity-using-social-networks-analysis/ Simplify version of Social Network Graph of Smart City. The nodes represent Twitter @account or #hashtag. The size of nodes are proportional of the level of Node Betweenness Centrality, colors refer the cluster membership. Black edges have greater ability to link several clusters […]

1. GNSS Logger on your phone (Android) -Before starting, you have to check the GNSS(GPS) of your smart phone. If your phone can not get raw data, you can not proceed to analysis. -For checking : https://developer.android.com/guide/topics/sensors/gnss – Go to the homepage below. https://developer.android.com/guide/topics/sensors/gnss – Click “GNSS Logger APK” -Click “Gnsslogger.apk” and download on your […]

Using Desktop App for analyzing the GNSS raw measurements I used the Desktop app to analyze GNSS raw measurements. When I insert a text file into this program, it automatically analyzes the data and displays the graph. It takes about 10 minutes to analyze, and the data is now small enough to be analyzed quickly. […]

GNSS raw measurements from Galaxy Note 9 Previously, the Galaxy s7 or Asus smartphone did not collect the GNSS raw data for accurate location analysis. So I checked the spec and tested again with Galaxy Note 9. I was able to get all the GNSS raw data as shown below. I was able to get […]

GNSS raw measurements If you use a smartphone that supports GNSS raw mearsurement, the following graphs can be analyzed in smart phone applications and computers. It is not easy to make accurate analysis with only coordinate value. Therefore, GNSS raw measurement is required for the above data analysis. So, I conducted a simple study on […]

Different data storage capacity depending on GPS performance of Smart phone I measured GPS data using both Samsung Galaxy s7 and ASUS A002. GNSS data is loaded as in the previous experiment, but raw GNSS measurements must be taken to ensure accurate analysis. In addition, GNSS Logger, which is now supported by Google, uses this […]