Gold inched higher on Tuesday after two sessions of straight losses, ahead of a major cash injection by the European Central Bank expected later this week, and a weaker dollar lent support. Spot gold edged up 0.3 percent to $1,771.96 an ounce by 0643 GMT, off a three-month high of $1,787.11 hit last week. US gold was little changed at $1,773.80. Technical analysis suggested that spot gold could rise towards $1,797 an ounce during the day, Reuters market analyst Wang Tao said.