Every nakshatra has certain sounds and certain letters attached to each pada. If one has moon in the particular pada and moon is placed well in the horoscope , the letter is used for naming the child. The Letters for Ardra nakshatra are
khu- First pada, in kubric
kha-2nd pada, in khargosh
Nga- 3rd pada, in Nancy
Chha -4th pada. in chhabi

Baby Names for Ardra natives
The Boys names are-
Kushal (कुशल) – Skillful, intelligent
Kunal (कुणाल) – Lotus, wise, intelligent
Khushal (खुशाल) – Happy, prosperous
Chaitanya (चैतन्य) – Consciousness, energy
Chirag (चिराग) – Light, guiding lamp
Chhaviraj (छविराज) – King of beauty
Chhandak (छंदक) – Artistic, poetic, knowledgeable
The girls names are-
Baby Names for Rahu’s Shatabhisha and Swati nakshatra
Kumari (कुमारी) – Princess, youthful
Kuhu (कुहु) – Sweet sound, melody
Khushi (खुशी – Happiness, joy
Khavya (खाव्या) – Sacred, wise
Chavvi (छवि) – Reflection, radiance
Chhaya (छाया) – Shadow, protective
Chandni (चाँदनी) – Moonlight
Rahu Shanti puja
If a baby has moon in one nakshatra of Rahu like Arda, Swati or Shatabhisha Rahu shanti is advised. Some shanti homa/ puja or rituals should be done so that the kid feels accepted in the family and the environment.
Baby Names for Shatabhisha and Swati nakshatra
Shatabhisha is nakshatra of Rahu and its information is given here. The swati nakshatra Information is given here.
Also the Shatabhisha nakshatra babay names here.
and Swati nakshatra baby names here.