Is it permissible for a woman to dress in a manner that makes her appear as a man in the wilderness and desert, for the purpose of avoiding harassment?

It is permissible for a woman to wear trousers if they are under her garments, but it is not permissible for her to suffice with them and display them in front of non-mahram men. As for wearing the 'shemagh' (headscarf), it is permissible if it is not in a style that resembles men's wearing of it. A woman appearing with trousers and a 'shemagh' in the aforementioned manner is not permissible due to the lack of necessary covering and imitation of men.