Due: 10am, Monday, July 31, 2017. A Word file with the answers to be submitted o

Question

Due: 10am, Monday, July 31, 2017. A Word file with the answers to be submitted on ELMS. Homework Questions from Lectures

Question 1. Explain how GPS calculates an object’s location (coordinates). (1 point)

Question 2. Write an essay (with at least 200 words) as an example to introduce application of remote sensing in human-environment interaction. The essay will focus on the source of images, image processing, error evaluation, and conclusion. You may use any journals, textbooks or web pages to review, summarize and write this example. (2 points)

Explanation / Answer

solutiON1)A GPS receiver "knows" the location of the satellites because that information is included in the transmitted Ephemeris data . By estimating how far away a satellite is, the receiver also "knows" it is located somewhere on the surface of an imaginary sphere centred at the satellite. It then determines the sizes of several spheres, one for each satellite and therefore knows the receiver is located where these spheres intersect.

sOLUTON 2)

Dear Colleagues,

The presence and spread of human activities and impacts are major agents of most environmental problems along the urban–rural gradient. The human dimension of environmental change is ruled by a complex interaction of social, political, economic, and cultural factors that are coupled with growing globalization and global climate change. The consequences of human settlements and actions are altering the properties of natural landscapes, ultimately changing patterns of ecosystem processes and biodiversity. Thus, understanding of human–environment interactions is key to sound urban planning, management, mitigation, and conservation strategies. Increasingly, remote sensing data and technologies are being used to analyze, monitor, and model the impact of human settlements and activities on the environment and the impact of environmental changes on human society in the urban–rural space. Advances in the spatial, spectral, and temporal resolutions in remote sensors provide great opportunities to discern discrete patterns, disturbances, trends, and processes, from the macro- to micro-scale of systems of interest. This Special Issue calls for papers that present cutting-edge studies in human–environment interactions along the urban–rural gradient through remotely sensed data and techniques. The following list provides some examples of topics of interest:

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