Australia's Olympic chef de mission Kitty Chiller says a target of more than double the gold medals won at the London Games is achievable in Rio.
Chiller said Australia's 410-strong team had to win "15, maybe even 16" golds among a medal haul of about 45 to reach the goal of a top-five finish in the overall medal count. 
That is double the haul from London, when Australia won eight gold, 15 silver and 12 bronze for a total of 35 medals to finish eighth on the overall ladder behind top-five finishers the US, China, Great Britain, Russia and South Korea.
Chiller, who appeared in Sydney on Thursday to name the women's and men's rugby sevens squads, conceded it was a "huge" mountain to climb.
"[It] is a huge ask. I genuinely believe we can do it," she said. "We finished our benchmark event last year ranked seventh, with 13 gold medals and 37 overall. Most importantly we had 18 fourth- and fifth-placed finishes in our benchmark event."
As always, a strong swimming team heads to Rio, while cycling, sailing and rowing are also expected to perform well.
But Australia's newest Olympians, the women's rugby sevens squad, could be the first source of good news from Rio.
Ranked No. 1 in the world, the reigning world series champions are favourites to win gold in one of the first events after the Olympics starts on   August 5.
"We know from history that the number of medals swimming wins in the first week is normally around a third of what we can expect to win overall," Chiller said. "Do we like the fact that we are always relying on swimming? Not necessarily, and that's why there's a big push that we do need to get those one or two other medals from other sports across the board."
Australia will field their biggest team in Brazil. With many countries still finalising their numbers and Russia's athletes under a doping cloud, Chiller predicted that Australia would be among the five largest teams in Rio behind China, the US, France and Great Britain.