SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934


                        Date of Report: February 28, 2003


                                ESSEX CORPORATION
             (Exact name of Registrant as specified in its charter)



Commission File No.  0-10772


         Virginia                                                  54-0846569
(State or other jurisdiction of                         (IRS Employer ID No.)
incorporation or organization)



         9150 Guilford Road
         Columbia, Maryland                                        21046-2306
(Address of principal executive office)                            (Zip Code)



Registrant's telephone number, including area code:            (301) 939-7000





                                ESSEX CORPORATION



Item 2.    Acquisition or Disposition of Assets

           Pursuant to an Agreement  and Plan of Merger dated as of February 21,
           2003 (the "Agreement") by and among the Registrant,  its wholly-owned
           subsidiary ("Merger Sub"), Sensys Development  Laboratories,  Inc., a
           Maryland corporation ("SDL"), and the principal  shareholders of SDL,
           Merger  Sub was  merged  with and into SDL with SDL as the  surviving
           corporation  (the  "Merger").  The  Merger  became  effective  as  of
           February  28,  2003.  Pursuant  to the  terms of the  Agreement,  SDL
           shareholders shall receive a total of $309,000 in cash and shares and
           options for shares of  Registrant's  common stock in exchange for the
           outstanding  common stock and options held by SDL  shareholders.  The
           terms of the Merger are contained in the Agreement, which is included
           herewith as Exhibit 2.1.

Item 7.    Financial Statements and Exhibits

           (a)             The  financial  statements  required by this Item are
                           not included in this  initial  report on Form 8-K but
                           will be filed by amendment  not later than sixty days
                           after  the date that the  initial  report on Form 8-K
                           must be filed.

           (b)             The  pro  forma   financial   information   of  Essex
                           Corporation required by this Item are not included in
                           this initial  report on Form 8-K but will be filed by
                           amendment  not later  than  sixty days after the date
                           that the initial report on Form 8-K must be filed.

           (c)             Exhibits

           Exhibit 2.1     Agreement and Plan of Merger among Essex Corporation,
                           SDL Acquisition,Inc.,Sensys Development Laboratories,
                           Inc. and the Principal  Shareholders,  dated February
                           21, 2003 (excluding  Exhibits and Schedules)

           Exhibit 99.1    Press release dated March 3, 2003


                                              SIGNATURES

           Pursuant to the requirements of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                            ESSEX CORPORATION
                                            (Registrant)



                                           /S/ JOSEPH R. KURRY, JR.
                               -------------------------------------------------
DATE:  March 7, 2003                        Joseph R. Kurry, Jr.
                               Sr. Vice President, Treasurer and Chief Financial
                               Officer

                                       2



                                ESSEX CORPORATION


                                  EXHIBIT INDEX

                    (Pursuant to Item 601 of Regulation S-X)

Exhibit
NUMBER          DESCRIPTION AND METHOD OF FILING

2.1             Agreement  and  Plan of  Merger  among Essex  Corporation,   SDL
                Acquisition, Inc., Sensys Development Laboratories, Inc. and the
                Principal Shareholders, dated as of February 21, 2003 (excluding
                Exhibits and Schedules), filed herewith.

99.1            Press release dated March 3, 2003, filed herewith.