For one thing, It's not 4 trips through space "and back" It's just 4 trips.
The BTO is just the processing time for the response. One way travel should just be the ping time minus the BTO divided by four.
The search for missing Malaysia Airlines MH370 has been moved to another area of the southern Indian Ocean dubbed "the 7th arc", after new analysis of satellite communications from the aircraft.Australian officials confirmed the new target area after completing a search of the previous location with no sign of wreckage."The latest information and analysis confirms that MH370 will be found in close proximity to the arc," the Australian Transport Safety Bureau said in a statement quoted by USA Today."At the time MH370 reached this arc, the aircraft is considered to have exhausted its fuel and to have been descending."The bureau stated that the plane is likely to have crashed within 60 miles of the arc, which sweeps across a huge area of the ocean. According to officials, the search will focus on a 17,500 sq m area.The location of the 7th arc, in relation to the area already combed by a US underwater drone, is not clear. Bluefin-21, an autonomous mini-submarine, completed an unsuccessful search of the Indian Ocean seabed at the end of May, in the area originally believed to be the crash zone.
Australia, which is responsible for search and rescue operations, has been looking for the plane in an area about 1,800km off its west coast.The latest detail on the plane's possible flight path came from an analysis of a failed attempted satellite phone call from Malaysia Airlines to the plane, said Australia's Deputy Prime Minister Warren Truss."The search area remains the same, but some of the information that we now have suggests to us that areas a little further to the south... are of particular interest and priority," he told reporters in Canberra.
Australia has released satellite images it says show 12 “probably man-made” objects floating in the sea near the suspected crash site of Malaysia Airlines flight MH370.Taken two weeks after MH370 disappeared on 8 March 2014, the photos were analysed by the Australian Transport Safety Bureau (ATSB). Its researchers used drift modelling of the debris to suggest a new potential location for the crash site — a 5,000 sq km (1930 sq miles) area just north of the former search zone.
Two Australian government agencies, Geoscience Australia and the Commonwealth Scientific and Industrial Research Organisation (CSIRO), analysed the images, which were taken by a French military satellite but not released to the public.
Wall Street journal is saying Pleiades satellites took the images.https://www.wsj.com/articles/mh370-new-analysis-spots-objects-near-planes-likely-crash-site-1502872824
Geoscience Australia (GA) was asked to assist the Australian Transport Safety Authority (ATSB) in the analysis of a set of four Airbus PLEIADES 1A images. GA received these images for analysis on the 23rd March 2017.The data was acquired over the Indian Ocean on the 23rd March 2014. The analysis performed by GA was to determine whether the images included objects that were potentially man-made in origin. GA analyses included semi-automatic workflows and a number of potential objects were identified.The overall location of the study area is shown in Figure 1, and a detailed overview of the four scenes with associated detected objects is shown in Figure 2. Figure 3 details the relationship between the PLEIADES data and other MH370 search-related activities.The appendix to the report presents a data summary for each of the images. This includes a browse image of each scene, including the object locations, a cross plot of the representative spectral radiances observed in the image, a table of the object locations plus size metrics and an indicative label as to the object’s origin. The detected objects are shown in true colour and in a false colour derived from Principle Components Analysis (PCA) to help distinguish objects from their surroundings.
Quote from: kevin-rf on 08/16/2017 03:24 pmWall Street journal is saying Pleiades satellites took the images.https://www.wsj.com/articles/mh370-new-analysis-spots-objects-near-planes-likely-crash-site-1502872824Thanks. Shame the story is behind a paywall.
Quote from: Star One on 08/16/2017 05:56 pmQuote from: kevin-rf on 08/16/2017 03:24 pmWall Street journal is saying Pleiades satellites took the images.https://www.wsj.com/articles/mh370-new-analysis-spots-objects-near-planes-likely-crash-site-1502872824Thanks. Shame the story is behind a paywall.Here is another news site, same story: http://www.kathrynsreport.com/2017/08/mh370-new-analysis-spots-objects-near.html
Newly-published satellite images – captured 15 days after the disappearance – might indicate the possibility of aircraft debris, and oceanic drift modelling has pointed to a potential alternative impact zone.Malaysian Department of Civil Aviation chief Azharuddin Abdul Rahman says the new information will be included in its examination of proposals to resume the search."We remain to be guided as to how this [information] can be used to assist us in identifying the specific location of the aircraft," he adds.Abdul Rahman says the government has "received several proposals from interested parties" regarding a renewed search, and that investigators are "assessing these offers".