1. A method for reception of a spread spectrum signal, the method comprising steps of: receiving a transmitted signal with an unknown phase; detecting the energy of the transmitted signal and producing observations of bits from the energy of the transmitted signal; determining the probability of detection in the step of detecting given a probability of false alarm and a signal to interference and noise ratio; conducting post-detection integration over multiple observations of bits in the signal to adjust the probability of detection and to acquire the code of the transmitted signal.