Stevie Morrison and Ben Rhodes will represent Great Britain in the high-performance 49er class in Beijing.
The pair were another of the British success stories at the test event in Qingdao last year, shortly after winning the World Championships in Portugal.
Helm Morrison, 29, and crew Rhodes, 26, backed up their form with a silver medal at this year's Worlds in Melbourne in January but they have since struggled to reach quite the same heights.
"Maybe over the last couple of years we rode our luck a bit in terms of the boat staying together," Morrison told BBC Sport.
"Earlier in the year everything that could go wrong did go wrong. We don't like to make excuses but some of the equipment problems are things you learn and we now know exactly what we need on our boat.
"We've got on top of lots of our weaknessess and we feel we are much better sailors than this time last year.
"We've been pretty strictly focused on the Olympics and aren't worried too much about what happened at the other events. We've just got to put it all down on that week in August."
Team GB sailing boss Stephen Park said: "They've got really good chance of doing well in China."
The 49er regatta begins on 10 August with the medal race on 17 August.
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